Worst service by Vodacom The Glen

This is my second post regarding Vodacom. My first query wasn't resolved, vodacom did absolutely nothing to try and assist me. Last year a weak before black Friday, I went to vodacom store and asked to settle and close my account. They gave me the settlement amount and I paid, and a week later I returned to the same store trying to buy a laptop. I was assisted by the manager of the store and informed me that I didn't have a contract in place with them as I've paid it off and closed my account. I was told I'll have to open a new contract and make a new application. I then decided to buy elsewhere. But from January this year Vodacom has been calling me saying I owed them. How's that even possible when I closed and paid off my account? I have logged countless queries, went to the same store, called customers services, went on their twitter account (via a DM), sent countless emails to their customer service and was never answered. Now that manager is trying to shield herself saying that employee has been fired (apparently for similar acts). Why didn't she take action against him? Why did she confirm to me my account was closed? Now she's trying to say I should have called customer service to close my account. How on earth you expect customers to know that information? I went specifically to the store to get the optimum help. They work there, and should have at least told me the procedure. I Everytime when I call they ask me to go to the same store, despite me no longer in Joburg. Today I've had to come all the way from Bloemfontein so that I can go to the store. This has got to be the worst customer service by such a big company. Every time when I called their customer service, they'll tell me to go to the store. What nonsense is that? Now they deleted my number of 20 years. I haven't used any other number or network besides vodacom. Vodacom needs to answer, I want my number back.