********** upgrade/ arrears account

I have contacted vodacom about a ********** upgrade that was done in december. The issue was apparently resolved but the havent fixed my account yet and they havent deducted any money for the contract from my account since January. Now i cant buy anything on credit due to their issues. I am blacklisted from getting another contract or buying anything on credit. How is it that i am responsible for your mistakes. Sufferring for your faults.