No Telkom data reception since start of contract.

I took out a 10G data contract at Telkom Mobile Merlyn. Getting home on 9 May 2015 it did not work. I phoned customer care the same day and was informed that the possible cause was no Telkom reception at my house. I phone again on 11 May and request to cancel the contract. They gave me ref no. ***9 and told me they must 1st send out a technician to my house to check the signal. If there is no signal they can cancel the contract. The technician visit me on 18 May and confirmed that there is no Telkom signal and he will forward it to the retention department. Since then I have been phoning Telkom every day or second day requiring proof of cancelation of the contract. Every consultant informs me that they will send an e-mail to the back office as they can not do anything until the retention department responds to them. I need to take out another contract at another mobile service provider but can not do it until I am sure the Telkom contract has been cancelled. In the meantime I do not have any mobile data at home to connect to the internet for school projects of my kids or personal banking and other internet communications. Tomorrow is already 20 days after reporting the problem.