So I bought some fish and a tank the filter I was told to get killed 7 of my 10 fish I came in to the store and got a different filter but they did not refund my fish or money for filter killing them what should I do

If the employees at that store told you what type of tank And filter to buy and it It caused the death of your fish. Then you are entitled to your money back. Make sure to bring the tank and a filter in along with your receipt. If they so no ask for the manger and then you threaten them with The Better Business Bureau. Then tell them that you're going to also leave a very badd review on their website. If they don't refunded your money since you Return Their products along with their receipt.

I'm gonna go in today and talk to someone we really do love our fish it was pretty heartbreaking

Got the employees name? I don't believe there's a refund for live animals, regardless. Good luck.

Demand your money back