I also hate dealing with Cretins who are too stupid to see that you're trying to help them.
Examples:
I'm buying something quite expensive, and they asked for my CC details so they can charge me when the work is done. Now I know that for a small business CC fees & commission are almost criminal, and this transaction will cost them $50~200 bucks, so I suggested I pay by EFT
purely to save them the CC charges. And they come back that if I want to do that I must transfer the money two business days before the job, so that they can see it in their account. So no, I'll wait till after the work is complete, they can charge my card and cop the costs.
I've tried to
help people who want to fit certain parts to their car. I'm selling individual components, and so I try explain to them that buying an
ABS module will NOT give their car
ABS if its never had it fitted. So they ask what they need, and I go into great detail about all the parts they will need, only to have them crack the *****.