MTN Nigel

I am deeply disappointed in the Nigel branch of MTN. We canceled our contract in June, today when we neede to do a simswap due to my device being ******, they said that the number is inactive. After waiting the whole day and going back after work, they still did nothing to the case. When we asked why it not showing on their system their reply was because we did not cancel the contract at the Nigel branch so they have to do everything from the beginning. I don't understand why the branches is not connected. And the one lady was very rude. Shouted at us, when I asked for an apology, she said "sorry, are you happy now". That was very unprofessional. When I asked her name she did not want to give it. I only give 1 star because we can't give none.