Allocate my 31 Jan 2019 payment Game!

I paid the game store card account on the 31st of January 2019, saw that the payment wasn't allocated on the statement sent on the 10th of February. I emailed payments@rcs about this and they responded requesting a proof of payment. Requested it from Nedbank and sent it to Game. They responded again requesting me to ask Nedbank for a target details report, which I did & Nedbank said they cant provide it because the Game is loaded as a Nedbank approved beneficiary on profile so Game must use the proof of payment provided that has a beneficiary number to identify the account number. Ive always paid using this method do why all of sudden payment has disappeared? All these phone calls are made by me, using my airtime, I've spent over R200 on airtime trying to resolve this issue and I refuse to pay in February until this is resolved because it will happen again where payments are allocated to a suspense account instead my account which reflects a bad credit rating for me because the account is in subsequently placed in arrears. I'm livid, extremely disappointed and in fact want to close this account after the payment issue is resolved. Its unfair to be accused of not paying an account and it be moved to arrears and be charged interest when I've always diligently paid using the same payment method every month. This is unprofessional and I've never experienced such treatment from any store.