How many times have you been ripped of in a car or parts deal???

I’ve been screwed by a machine shop once. I bought a brand new Ed Hamburger forged 340 crank. It had a stain on it that u couldn’t feel. I asked for their opinion. They said they could polish it out. So I said ok. They turned it cause they said it was out of round. My buddy took a forged 340 crank in to be turned. They sent him a 318 cast crank back. Kim