Installment paid but Totalsports can't 'find' it

I opened my account online & it was approved.I opted for a 6month no interest account.When the account was approved it came with a 12month interest account.I only picked up on this up by chance otherwise I would have paid interest on my account. I really think that was Totalsports being sneaky.How did selecting the option from 6 months change to 12 months online?received an sms saying my account will be suspended because the account was approved without them seeing my proof of income.I had to go in & show proof of payment & account will be unblocked, so I did. I made payment on the 2nd of December of R650, R50 more than I was suppose to.I received a number of sms's & emails stating that payment has not been made.I went online & tracked down the appropriate department & sent proof of payment to [Email Removed] & phoned through & spoke to John.John didn't follow through.Phoned again, no follow up again.Then some more sms's saying, to maintain a good credit score you need to make payment.This happened about every 3rd day or so.Phoned their remittance department AGAIN & asked that things should be sorted out.Received my statement & I was charged R69. USELESS!!