Deduction of fees

In 2016 I cancelled my DSTV and insurance. In October 2017 I juat got a message on the 30 that my account is in arrears and they deducted money of my account. Well phoned them on the 9 of Nov and was told firstly my account was suspended but never closed. Then was told they have to send the request to head office to close and pay back the money. Nothing up to date paid back! Then phoned again on the the 24 of the month and followed up. Still not cancelled was told my account has a credit balace of 700 and I must speak to finance department which I did and again was told systems slow and they will do the refund and give me a call back. Welll also this still not done. Phonex back again and was told this time now that they just deducted my monthly payments of my credit amount without permission or any correspondence in 2 years from them. On asking about deductions I was told no the policy now cancelled and nothing will be deducted well suprise there they tried to deduct 385 of my account again. Since then I have send numerious complaint emails and just no feedback. Even when they eventually did send me a cancellation letter no mentioned made of the credit amount or even any outstanding balances. I never gave my permission to just deduct of any credit amount which I did not even know was on my account and up to date not gotten any payment or credit amount paid back