Pathetic Service received from Vodacom Call Centre

Today I contacted Vodacom to cancell my account from the first agent i spoke to there were rude ,didn't want to listen or answer me I went to a Vodacom shop to pay off and cancell my contract i was not assisted ,then went to Game again the gentleman at Game called Vodacom ,just this week my daughter got a call to say my account is overdue ,arcoding to my understanding my contract ended in May and I paid this account off ..Rumani from finance "she's rude" doesn't listen ,don't care attitude on top of that she told me she doesn't have a manager "wonder how Vodacom operates"if there's a dept that doesn't have a supervisor or a manager ,when I asked her to escalate my query her response was "I'm not going to do that "i don't understand how can you employ someone that doesn't have manners to deal with customers

Then It was Zodwa customer service ,listening skiĺls are bad and she didn't want to help me ,she was like "mam u'll have to pay or go back to that Vodacom shop for assistance there's nothing we can do ,firstly I didn't ask for month to month contract i paid off this contract because I didn't want to have a contract anymore and I' m not prepared to pay for something I didn't ask for

Can this matter be resolved urgently I'm buying a car that's I'm clearing all my debts ,Vodacom Manager please intervene