Telkom takes no resposibility

Sell Direct claimed they contacted me on behalf of Telkom to upgrade my mobile contract. I have 2 mobile contracts with Telkom. I agreed to the one being upgraded. I also asked for a copy of the contract to be sent with the phone. The incorrect number was upgraded even though I recall specifying the number at LEAST 3 times. No contract was sent with the phone. I've tried various numbers to get this error corrected but the phone cuts just after I make my selection. I visited the PMB Midlands mall branch where I was advised that not only should I never upgrade online or over the phone, as there is no recourse, and if I want this corrected I must cancel the contract that has been incorrectly upgraded and pay upfront for the phone! I have since received an email from Telkom informing me that my spending limit on the upgraded mobile has been increased. Who authorised this . I cannot remember doing this! Telkom you take no responsibilty for this error. How did this company, who say they represent you, get my details knowing that my phone is up for upgrade & proceed on your behalf to bind me into a contract with Telkom. Who I might add get my monthly payment but can't be bothered to help me. Sis on you Telkom....You have no integrity.