Vodacom's Incompetence

I am exhausted and very irate with Vodacom's *********** internal communication. I owed them money paid it in full as per our arrangement a month later I'm still being harassed with calls regarding fees that have been paid. Honestly this is making me consider leaving you guys service provider. Its been escalated 8 times already but clearly the it's not being sorted and when I ask to speak to a Team Leader your agents dance about the bush on even promising me a call back.