Horrible customer experience

I saajidah a client of vodacom has settled my accounts and the accoubt was closed there has been no debits taken off until this year i called in the month of july to query only to find out that there was a ********** upgrade done on my i called the customer care on the 21st of July however everytime i call in i dont get a resolution today i called in spoke to an agent which questioned me more than looking into my account as she could hear the frustration in my voice but still questioned until i requested for a manager i spoke yo the manager however im still awaiting feedback this has been the worse customer experience especially when it such an important case as *****!!!