Worst and most unhelpful inefficient service

In my life of business I have never been so disgusted and aggravated with the poor and rude service I've received from Vodacom. On several occasions over the last 4-5 years I have phoned and complained about the downtime on my fibre optic line. I'd sometimes spend hours on the phone. The matter was never seen to and I continued having to try and work with extremely slow speeds and hours of downtime. During this time and for almost 5 years I paid my monthly subscription without ever being a day late or missing a month. Then one while was working my line just went down. After a few hours I called in fault reporting and they said my line was suspended because I had not paid. This was totally Vodacom's mistake as for some reason they did not debit me. Anyway at this stage I had had enough. They shove you from department to department, they don't answer their phones, they don't reply to emails and service generally is an absolute disgrace. I then phoned and told them i had had enough and told them to terminate my service immediately as I went straight to Telkom the next day and signed a contract with them. Vodacom suspended my service and over the next month or two I paid Vodacom in order to square off my account and finish with this total nightmare they have put me through. I have not used their services for over 6 or 7 months as I have been using another service provider and yet this morning I open my email and receive an account for almost R7000.00 The audacity of still billing me although I phoned on several occasions and was reassured that my services was terminated and I would no longer be billed. Absolute disgrace of a company. Unless Vodacom sorts this matter out very soon I will be taking this account and emails etc to an attorney.