No Activation explora

I ordered a dstv explora by multichoice on 10/10/2015 as per tv promotion for DPP package. After promise that delivery will be within 14 working days i only received the decoder 3 months later on30/12/2015 and that after numerous calls every day to dstv. Explora Decoder was installed the same day but since 30/12/2015 up until today no one at dstv can activate the decoder (E107 error code pairing) nor can any of the administrator or even the supervisors/team leader assist and no one can give an answer to what the problem is. Every time the same story \we will escelate the problem"but they dont even know what the problem is. Deductions for this explora has gone off my bank but no service. How can i pay for something that is not even activated. I am making calls every day and speak to 10 diverent people but without any success!! I am really disapointed"