did i do wrong?

[mytank90]

today i was out getting food for my snakes from local pet store when a lady in the store asked me about salt water tanks and if i thought the store was chargeing to much .the store told her and her kids that salt was easy and you could buy everthing including fish on the same day .the store was trying to sell her a 77 gallon tank /light /skimmer/rock /test kits /and over 400.00 in fish all at once .i told her not to get fish but the rest of stuff was ok .the guy in store got mad at me and told me never to return <no prblem >the lady i was talking to ended up leaving with me and not buying .outside i told her to try other places in calgay or try here or kijiji if she still wantd a tank