Capitec the bank that cant do simple maths

I made an online purchase in dollars for roughly $54, this put R834 and some change in holding on the 16th of March, On the 20th of march Bed Bath and beyond took their payment being $54 which now converted to R829, so because the amount were different a second amount came off and obviously the first amount is still in holding, I have proof from Bed Bath and Beyond that only 1 payment was taken meaning Capitec can reverse the amount of R834 back to my account, they will not do it because the amounts are different. I have been in twice with proof and no help. I had this issue with FNB and filled in a form and 3 days later my money was reversed as they can actually do maths and understand that $1 today in Rands is not $1 in Rands tomorrow. So now i sit minus R834 because no one will help. I have changed my salary to a different account and will not put another cent through this useless bank <br> <br> ***