Contract cancellation that won't happen.

I got a contract from them through a representative over the phone in May and she assured me that there is network coverage in my area for the sim card to work. When the sim (contract) was delivered it didn't work, I waited a couple of days and still it did not work. I contacted Mondo multiple times to get this sorted and then I was asked to go to the nearest Telkom shop to check if the sim card works, I went and was told that the sim does work but won't work for me because of the area I was staying in, there is no coverage there.

I wrote an email to Mondo and an assistant assisted me with my contract cancellation and said it would be cancelled within 7 days and I would be refunded my money and I would receive an email from Telkom confirming cancellation (this was almost 2 months ago) to this day even after multiple emails I have not been assisted and nobody responds to my emails. I have also called multiple times and every time they say they are ascelating the matter but nothing is happening and in the meantime I am being debited for a contract I can't even use.

I am very disappointed in the poor service I have received from Mondo and I want them to cancel this contract and refund me my money!!!