I work for the owner of a health food store. I'm given a fairly generous discount for my family to use. I do use it for some things but not all as there are some wholesalers that can still sell to me cheaper, even with my discount.
My Bff came with me to the store and I picked up some snacks for us to share using my discount. She must have told her special snowflakey sister about it then because a couple weeks later I got this call:
SS: Bloo, can you get me Supplement X and Vitamin Y at the store?
Bloo: Sure. You need me to pick them up for you when I go in?
SS: Yes, please. Bff said you get a good discount, so how much will those cost?
...uh, I can't give you a discount.
SS: Why not? BFF told me to call you!
Bloo: I can't believe BFF would say that. I never told her that I'd use my discount for anybody other than my family. The sale of supplements is my boss's bread-n-butter. It'd be like stealing!
SS: cue annoying whining and explanations, then
...I guess I'll just order them online.
I really stewed about what to say to my BFF knowing her flaky sister would go whining to her, then realized 'You know what Bloo? This is her (BFF's)
problem. You never told her you'd give anybody who knows your name a discount. Just forget about it.' The more I thought about it, the more I was sure BFF would never say anything to me about it.
And I was right, she never did.