i want my money

so in December I had a lay bye in Ackerman's Wonderpark and when I went to take it out I had lost my receipt so I used my ID and some of the things I had already bought them so I asked to return 3 things and they told me I had to pay the whole amount but was not refunded for the 3 items. I was given a voucher number where else I paid hard cash not the stupid voucher , the voucher number was sent to my phone and they said its valid till 2024. in December I got ****** and lost the phone and in January I went there to buy stuff and wanted to use my voucher and was told they had to call tenacity since I lost my phone, went back back February and since it was 6 pm they said no they closed they cant call. I went there in march was not assisted again and this time I was told since I lost my phone I forfeit the money they don't have any system where the store the information. this is so annoying as I go to that store weekly for feedback and I'm treated like a crazy person over my money my hard earned cash. They even know me and the guy that created the dam voucher acts lost all the time its so annoying they always leave me hanging like I'm crazy and that's my money. Ackerman's Wonderpark sucks no professionalism no customer service nothing they treat people like trash.