Embarresed TWICE

I paid up my account but there is an arrears amount showing and hence I am unable to use the purchase function. I was embarassed to leave some stuff I bought at the PNP. Then I called in Saturday 19th and they confirmed that it was resolved. I then called in again just to confirn that the account was active and the agent confirmed I can use the account again. I then went to the same PNP Hyper and tried to make the same purchase and again purchase declined! I have been paying my account since I opened it in late 2019, never once missed a payment but this is the way your company treats a loyal customer! DISGUSTING SERVICE MOBICRED!!