Selldirect is terrible

Hello Peter I'm writing this review with complete and utter disbelief in the way that selldirect handled my complaint..They contacted me in April about a telkom deal which I took..this deal came with a modem but I said that we have bad network in the area and he struggled for about an hour to confirm coverage, because of that he said he would send me a sim card with 1gig free for the trouble(I'm actually being billed for the so-called free gig)..from the time they activated the sim cards the modem did not work, it connected without internet, I phoned immediately to inform them, so that I couldn't miss the 10 day deadline for returns(I read in the leaflet that they actually have a return policy),it did not apply to me..I struggled for weeks to get assistance and finally on the 2nd of June they agreed to cancel once I pay R510 for the modem, which I did,the payment was deducted on the 3rd of June but there is no record of that now, no cancellation request has been forwarded to telkom since that date so they deducting premiums and on the 15th I phoned to find out what the deductions was for and the billing department explained that there is no cancellation request..they know nothing about the R510 I had to pay for the modem..I'm being billed for the 1 gig..telkom will refund me if they have to (no such thing)..I spoke to a lady from billing today and she could arrange for the modem to be collected but since I paid for it, isn't it mine???? A lady at telkom on the 15 said I should request selldirect for me to speak to a manager, I tried and I was refused that..I want to add that telkom is really trying to assist me and I appreciate that but as for selldirect, I get rudeness, my calls get cut as soon as I explain my problem, they give me a run around, offer no assistance, they gave me incorrect information from the start, my statement from telkom shows that I live in Port Elizabeth but they insist they got the address right..I do not know what to do now Please help me..I cannot pay for 2 years for something that I cannot use, they promised me recordings of our communication I'm still waiting for that..the more I said I cant pay for something I cannot use the more I was told that they will not take it back..I'm lost