Then, please, by all means, come and work for the local AZ on the commercial desk. You can force feed that guy with all the info he needs and still get the wrong part. GM 2500 Express van with an 8600# GVW needs rear brakes and he sends up front rotors for a half ton. Wheel bearings for a '95 Aspire (these are tapered bearings!) and he sends up a pressed in bearing for a Taurus. Or needing a radiator for a '99 F150 with a 4.2L V6 and getting a rad for a '89 Ram D150. And then having to wait 2 days for the rad that I ordered for the F150 because he typed in the wrong freakin' vehicle and explaining that to the customer! Or, as I've pointed out, the ever lovin' balljoints for a McPherson strut car. "Uppers or lowers," is always the question. If you can find uppers I wanna see 'em.
Look, if it's someone on the front counter I'll cut 'em some slack, especially on older vehicles. Chances are they do need a little help. I have no problem with that. But the guy on the commercial desk should be expected to know his s***, especially if I'm writing a quote for the customer, giving all the information I have available: MY, DOM, GVW, even VIN. And I have him repeat the info back to me. And still get the wrong part. Now it's costing me as a technician money and the shop money in lost productivity.