Very bad customer services

Ackermans store Katlehong letsoho shopping center bad customer service,just to do a charge dispute from their system as one of their cashier made for me a card payment which wasn't a success from the cashier register but from my account as a customer it reflected successful and I was told it will reverse automatically it just take time with different banks okay ,fast forward A day later I went back to the store to ask because this transaction was fully successful the banker told me they can not assist as I didn't have the decline slip and to my understanding one gets that decline slip if a transaction wasn't a success,I never got one. I went back to the store to ask for that decline slip,I was told our speed points don't give out a decline slip. Okay what's the was forward here."mam u will need to provide us with a copy of yr bank statement "okay I did so. I than ask how long it it gonna take for me to get my money back 5 to 7 working days. From the 23rd March 2023 till to day 04 April 2023 I haven't received my money back.im so frosted by their customer service.