Cell c - bad service, no urge

Trying to cancell my dads contract. Has a disability of hard hearing. When phoning and assist him by saying what they ask and help him to answer the assistant on other side keep on saying not to help him after it was explained whT the problem os. Then on end its he did not answer correctly. Then they have attitude to me, and for 3 days everyday promises of supervisor to phone, nothing, no effort, bit when we reversed payment they phone quickly then my nr counts???? Still strugling 3 months to cancell contract. Alwayz excuses. This is absurd. I need someone to action from cell c.