Bad Service and Line suspension

My cellphone contract has gone into arrears as a result of the whole Covid 19 Pandemic and me being at home for 3 months and on unpaid leave. I have made an attempt to write a letter for an agent to contact me so that I can make payment arrangements as my line is suspended and cannot call out. No response, they called eventually this month, I arranged for an amount, but woke up today to find they debited my bank acc for the full outstanding amount. Another issue I am having with them is that my wife handles all my financial affairs as I work at a mine and cant always answer their calls, I have asked them to make a note on my contract to give my wife permission to make payment arrangements and any changes, but everytime they call and get her on the phone, they REFUSE to speak to her. I am so unhappy with Cell C, I am so sorry for ever doing business with them. Can they please contact my wife to discuss the matter further on ***. Or on my prepaid sim ***.