Unable to activate simcard

I took out an online cellphone contract and paid for the 1st month on 25.01.2015. I recevied my handset on 02.02.2015, to date Telkom mobile is unable to activate the simcard. Essentially i have paid and am paying for a cellphone that i am unable to use. I have literally callled the callcentre over 10 times daily(no exaggeration) and everytime i start the process again, deciding today was the last straw, i decided to cancel the contract. Even more challenging as Telkom cannot activate the simcard nor can they give me a straight answer to cancel the contract. I would like a response from Telkom management as clearly the callcentre is unable to deal with this.