MTN horror service

If there was a negative star rating, I would give MTN a negative star. First of all cancelling their contract is next to impossible. That time I went to the damn store to cancel, oh you would think after getting an sms saying your request is complete you are done. No absolutely not, they went ahead and send me an invoice for the month, for what you may ask because I cancelled( month to month home wi-fi). Not only did they send an invoice they went ahead and debited me. Ok all this time you'd think I am not reaching out to MTN, well guess what. I am but they are not replying or answering their phones. You'd think its done, not it is not, they go ahead and change the cancellation date which means they have in principal debit me for the month. Are clients a joke to you?I am super ****ed off. Bear in mind the only time I got some sort of assistance was when a friend who works there escalated the matter. And please don't think the service is good no this is after they wanted to debit me for a service they are no longer providing MTN your service is horrible