It’s my money, it’s not my fault, it’s your systems, I want it back

toys r us Fourways doubled billed me, when 1st transaction took place, I showed them the sms, they told me it will reverse, I paid again, this was on the 1st Feb 2021, it never reversed. Had to go print out a bank statement and they agreed I was double billed, however I now have to wait for another 10 days, that time it’s the 11, imagine having to wait 20days just to get your money back, this is pathetic