My balance increased

Hi am edcon customer holding edgars credit card. with account no ***.Due to the lock down iwas advised to pay you through the your account , and on the 31 of april idid pay edcon but ihave not received any messages from you, that acknowledge my payment and when ilog to *120*334# to check the balance ifound out that you have dramatical increased my balance .why is is this happening are you assuming that customers are not going to pay