Dollar Tree review: returning items and no one has responding to me yet

Always shop at store #4310 never had a problem before. I brought 22 pirate hooks for a birthday party. Well it stormed the day the party was scheduled so therefore could not use all the hooks. I went into store #4310 to EXCHANGE the items( did not have receipt) so I ask from the beginning she said yes let me get the manager. I said ok then the assistant manager came up with an addituide and say no you can't exchange with out receipt so I say since when. Then she goes to say you can only do 3 items I had 18.(13 hooks and 2 table clothes) . I ask for Dee the store manager they said she not here. So I say ok I'll come when she's here. Then she says I don't know her schedule.
I called costumer care on Tuesday 7-16-2019. Left message for District Manager I have not heard from him as of yet. Something need to be done.