SHODDY SERVICE QUALITY

Pretty irritated at the moment. I took out a contract with MTN and SPECIFICALLY asked them to debit my account for my contract on the 25th of each month. The 25th has passed, and no deductions were made, and from my understanding, this can damage my credit record as this has happened before. I called the MTN service and guess what...No response from call center agents! I am rather disappointed that I have just started this contract and I am already receiving shoddy service. I would like to receive a call from MTN directly as this was not my problem and I will not be inconveniencing myself further for a mistake that THEY have made. Get back to me promptly, or else I am taking this to the ombudsman to ensure that heads roll. I should not be the last to know about MY ACCOUNT!