Telkom poor service

I signed up with Telkom for LTE lite smart broadband, they checked my area and said it was available in my area. It took them a month to deliver the unit to me only to find there is not connection in my area. This was in November 2018, I logged a query with them and they only sent the Hawawi agent out about three weeks ago to check and confirm there is no signal last week I got a call from a Telkom agent confirming this. I said I need to cancel the contract and get a refund as I have been charged R907.57 per month since November , the reply I got was I need to cancel the contract on line or go into a Telkom shop. They cannot do it even though the query was logged with them. I logged onto the Telkom website only to find my account number personal details cannot be found, which means I will need to go into a Telkom shop to do this, I don't have high expectations as I went into a shop for help when I realized I have no connection in my area and they were not helpful at all saying I had call Telkom. Really why do Telkom bother with shops and staff when they cannot help you and most of the time they don't want to help you. After the call last week the agent asked if I would like to stay on the line to rate him to which I responded no as I want to rate Telkom and the whole way my complaint has been dealt with. I was then sent an SMS to say the case ********** 4 has been resolved which it not true I am still trying to cancel the contract and get confirmation. Really cannot rate this company poor after sales service.