Lack of communication and correspondence via email to resolve the case.

My Vodacom account has been handed over to MBD Inc. They've called me plenty of times and wasn't able to provide a solution to this case that shouldn't have existed. Since the 23rd of June I've send them 10emails to various email addresses provided by them. Each and every time they say they've never received anything and are not able to trace it on the system what so ever. The last gentleman I've spoken to was really rude and shouted at me.

Vodacom was able to resolve this and told me that they've informed them twice that my ITC credit has been cleared and that the error has been resolved.

I've also send them the proof of the statement to prove to them that I don't owe them anything. Yet they keep on contacting me and sending me the invoice and adding costs to the account. When will they start to realise what's going on and stop calling and harrasing me???