MBD Attorneys debt collecting for Vodacom

This company is contracted by Vodacom to collect debt. There is a dispute between myself and Vodacom for the last 3 years. I get called 2 times a day by MBD. The person on the other side speaks for 10 seconds and then cuts off the phone. I guess 10 seconds is enough for them to prove to (********) Vodacom that I have been contacted numerous times regarding the matter. I have made numerous calls to Vodacom and MBD. Numerous emails were sent to no avail and no reply. So I guess the only things I can do is to ask them TO STOP CONTACTING ME UNLESS THEY HAVE READ AND REP**** TO MY EMAILS. A word to Vodacom: If you think that the matter will be resolved by MBD, you are in for disappointment. Phoning debtors and hanging up 10 seconds into the call, or not responding to emails, and charging for these services, will hardly collect debt or resolve disputes.