Vodacom disgusting customer service

I called Vodacom subcriber collections, the agents are avoiding the calls then ending the calls. I need a paid up letter for a old number *** but cannot get hold of an agent. They are worki g from home avoiding calls, acting like they cannot hear the customer then dropping the line. 1 Agent Prince dropped in my ear for no reason. I'm very dissapointed in the Vodacom call centrr