Poor service from RCS GAME MIDDELBURG AND RCS SYSTEM

I paid my account in the middelburg game store using a Capitec to swipe. Now I get msg and statement that says I didn't pay I asked the game store why the can't help me I sent thenk the bank statement to show that I paid but where is my money I am so disappointed with RCS GAME MIDDELBURG coz walking around with my bank card is the safest way to pay my bills but if I personally do payment but still says I didn't pay while my statement said it's paid to them it's a disgrace .I am now lost devastated on how must I pay my account again