Expecting a callback

I have never been in arrears for anything as I am able to manage payments. However, after taking out a phone contract, my debit orders for the month was too high. I took out credit rescue in June. My first payment was July. After being with them for 3 months and the payment debiting from my bank account, I got a call from a handover team earlier this morning. My MTN has been handed over and I’m apparently in arrears with a 17k. This is DISGUSTING customer service. I don’t feel that Credit Rescue provided all the information and disclosed this with me upfront. Had I known, would I have never went with them. All the funds that has been debited from my account to date from credit rescue, I expect a full refund or credit rescue should settle the amount with MTN and cancel my contract with Credit Rescue such that I can pay the MTN account directly in going forward. I have NEVER came across such service where I was ever indebted or owed. I’m looking for a way forward which will enable me to build my credit score again. This is setting me back. PUTRID SERVICE!!!!