Incompetence

My service was suspended a day before the agreed upon debit order date, the provider has a mandate to debit me on the end of each month. I noticed that they didn't debit me for Oct & Nov and I made a manual payment in December after I called to enquire why am I not being debited and still no response. Now yesterday I have been unfairly suspended despite my efforts to understand why am I not being debited. The call centre confirmed that my banking details and debit order is still the same yet nothing is being done and now I have been suspended due to incompetence of your debtors department, no one has even picked up the phone to call me and explain what happened.