Bad service from telkom wifi service

I bought wifi router that is only R369 every month that is caped. Then in july 2019 there is a deduction of R879 going off on my phone. When i called they tell me my wifi is uncaped. Called them probably about 8 or more times but no1 contacted me back. Then i went in store they tell me i mst request the voice record from head office from the manager i called 3 times for that as well until today i ddnt get the voice recording. Everytime i just get a sms to say case no have been resolved but no1 contacted me to rectify the amount i mst pay and its 7months later. They keep on deducting more and more every months then just go and reverse coz nothing was done to help me.