TELKOM SERVICE at BILLING DEPARTMENT

I have been trying to sort my account since October 2018 and still they charge me with reconnection fees and interest. I phoned them on numerous occations and sending emails but, they still do not sort this account. What must I do? I actually need the telephone for emergency as my mother of 92 year is residing with me and she need to phone me. She cannot operate a cellhone. Telkom is quick to hand me over for not paying, but they DO NOT sort the account. PLEASE HELP!!!