MTN poor customer service

I have an existing contract with MTN. I wanted to add another contract, but apparently my last debit order failed of 253.00 which was not my fault. I had to pay that cash including the charges(11.40) I asked the consultant for paypoint,he said any outlet or Absa. I went back to the store to pay, he told me I cannot pay there only at Absa. I went to Absa to pay 300.00. I had to go back to the store later the afternoon just to find out that I had another 271.00 to pay,before I can get another contract, because my August debit failed. I provided a bank statement confirming the debit for August did not fail. The guy said he was going to call me back, he didnt i had to go back to the store. Apperently he was busy. He called MTN customer care while i was there, and he was on whatsapp how professional. I decided to contact MTN Customer care myself. Being put on hold and phone would conveniently disconnect. Finally I got through to Vusi, who did not make sense at all. He send me a statement which did not say much when i asked to be called back he said cant make outgoing calls. Up until now I am still waiting for someone to call me back. After 6 years this is how MTN treats value clients