Poor service

So I had a colleague that had a problem with her router, she was using my phone to call the customer service for assistance, since I'm with vodacom. She call them about 3 or 4 times. Yesterday when I tried to calm them I wanted to take out a new contract again, but I found out my number has been blocked to call the customer service department, they state that I have been calling to many time. I used someone else phone to call to ask them to remove my number from being blocked the young lady I spoke too told me why was I borrowing my phone to my colleague, they will unblock my number after 30, I told her that's not acceptable, I asked to speak to the manager, she told me Matthew will call me today around 13:00pm, but he never did. Few minutes ago vodacom called when I answered they hung up, no one at home is using vodacom I'm unable to call them now since my number has been blocked. I'm really angry