Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: Backstory: I work at a chain pet store, our policy with goldfish (feeder goldfish) is that if you are not buying them to feed to another animal and want to keep them as a pet, you must have a fish tank big enough. My store policy also states that if I feel like an animal (or fish) wont go to a good home, I am not required to sell it. My managers typically always back me up with this.

M: Me

C: Customer

Okay, onto the conversation that follows:

M: Hello sir, can I help you today?

C: Yes I'd like 5 small goldfish.

M: Oh cool, what are you feeding them to?

C : I'm not feeding them to anything, they're going in an 18 gallon tank.

(I'm technically only allowed to sell them if they're going into a 29 gallon tank. On top of that, I'm only allowed to sell an inch of fish per gallon. So if our gold fish get up to 11" then I'm only allowed to sell you 1, maybe 2 at the most)

M: Oh sorry sir, I can't do 5 in a tank that small. My store policy states... (I explain it to him)

C: I don't give a F\*\*\* about store policy its retarded, and you can mind your F\*\*\*ing business about what I put in my tank.

At this point in time he was getting up in my face, but I tried to remain calm. I explained our store policy and told him I'd sell him 3 at the most. He proceeded to berate me in front of a co-worker when I finally snapped.

M: If you don't like my stores retarded f\*\*\*ing policy you can go shop somewhere else.

I finished bagging the fish and left him before he could ask me anything else. I'm unsure if he complained to management, my co-worker said he'd back me up if I received a bad VOC. 

I was talking to a friend and they told me I was the asshole, and maybe should have stfu and just bagged him his fish and that I shouldn't have made such a big deal about the stupid fish. I've asked a couple other people about this and they're split about 50/50. Is the customer always right, or do I have the right to stand up for myself? 

refusing to sell fish when a man is breaking store policy