Horrible Service, communication and getting ****** from my money

Telkom is giving me the worse experience ever. My account get debited every month with almost double the account i am suppose to pay for my wifi, I've been suspected from first week June to date but still they take money from my account. I get messages from debt collectors saying that I am owing. I call at least 3 times a week and all they say is they will look into the matter and i should wait a week for them to switch my wifi back on. Calling the call centre is a nightmare, they put me on hold for over 20 minutes, still with no help. I even spoke to the manager and still no help. Today I called 3 times and while still speaking to the consulted the call cuts. I sent numerous emails. I don't know what to do anymore. I am frustrated and very upset. I just need to know what is happening with my account, Why my wifi is off and why they debit so much money every month for nothing and I requested for invoices until today nothing. Telkom is the worse ever and the making things very difficult.