Oh man.... Here we go.....
I used to work at Autozone back a few years ago with fellow GRM'er Pseudosport. I have hours of stories I could tell from both sides of the parts counter and the parts delivery truck that would boggle your minds. I'm sure he can chime in with a few of his own too.
Working there for 4 years twisted the good, honest person that I was into a jaded person full of hate for my fellow man. I'm surprised I didn't kill anyone while working there. I also learned that 99% of the general public are completely inept at conducting simple everyday tasks, and it mystifies me why many people haven't accidentally offed themselves with their stupidity.
Let's illustrate a couple of examples:
How about this one: a guy comes up to me who came in with a completely riced-out Ford Focus sedan, complete with giant dragon vinyl down the side, chrome hubcaps, and park bench wing. He b-lines it toward the clearance section when he sees some universal fit underbody neons. The clearance section has a big sign saying "All Sales Final" on it. He comes up to the register and the following conversation happens:
Me: How can I help you?
Focus Guy: Will these fit my Focus?
Me: They are universal, you have to make them fit.
Focus Guy: So, will they fit?
Me: Again, they are universal. It's up to you to make them fit.
Focus Guy: You didn't answer my question. Will they fit my car?
Me: They are universal. It's up to you to make them fit.
Focus Guy (getting mad): I'm going to ask you again, will they fit my car!?!?!?
Me: Honestly, buddy, they might. You have to make them fit. THEY ARE UNIVERSAL.
Focus Guy: So, if they don't, can I return them?
Me (pointing at the sign): No. All sales are final, like the sign says.
Focus Guy: Ok, I'll take them.
I ring the guy up, he takes them away. Not 3 hours later, he comes back, and tries to return them. He starts getting beligerent and saying that I told them they would fit. My manager at the time (I was an assistant manager) comes over and tries to explain that they are universal and that all sales are final because it was on clearance. He just didn't get it and starts to lose it. I just walked away! Seriously, how berkleying stupid was this guy???
Then there was the time some guy came in with spark plugs that had been in an engine and were used for about 9 months, and he brings them back demanding his cash back. He threatened violence, and my manager just gave him the damn cash. I was pissed. I would have chosen the violence.
Oh, and there's the time the guy got pissed because we didn't have something in stock, so he proceeds to go outside and start beating the crap out of his wife and kid!!!! about 3-4 other employees and I saw him do it, and ran after the guy. The wife he was wailing on was driving, and she didn't stop. He just kept yelling crap out the window like the scum that he was, instead of getting out and facing the angry mob that wanted to stomp on his face. We called the police, but they never caught him.
Oh, and then there's the other end of things....
The company itself is just as twisted as it's customer base. They don't care AT ALL about the customer or helping the customer, they only care about selling these stupid little $0.99 packets of grease that probably cost about $0.02 to make. The district manager will call every day for packet counts. If you aren't selling enough, the store gets in trouble, and you get called out on the conference calls. It didn't matter if the customer wanted that, they would try to make you shove these things down their throat. This is all they train the employees anymore, not to help the customer solve problems, but to sell packets of berkleying grease.
And the talent that they hire: well, when I worked there, there were a couple of guys that knew what they were doing. Most of them are long gone. The old store manager was great! He was a vintage BMW bike guy who knew his way around many a car and bike, and was a great guy to boot. The one that's at the store now was overheard a few weeks ago telling a customer that loose lug nuts will tighten themselves up as you drive a car down the road. That's some sage advice right there. And that knowledge trickles down to the other employees.
So, to the OP.... this is why they can't figure out how to find you a belt based on decoding the part number.
(Sorry for the super long rant, but I always have pent up anger that's begging to be released at the thought of this topic, and I thought I would share it with you guys!)