OnAir TV sham and ****

I was called regarding a DSTV Explora and the agent explained that I will be paying R299 this is inclusive of monthly DSTV subscription. When I found out that this is not true OnAir TV does not want to collect the device and cancel the contract. I'm being told I will have to pay a cancelation fee and this is not fair because I called before the 7 days cooling period to have the Explora collected, I'm a pensioner and I feel this company preys off pensioners and the give out false information to lure us into getting into contract with them, I received a WhatsApp message saying if I don't pay there'll be a negative listing on my credit profile. I have spoken to Kumashri who has promised to call me back after listening to the call record but still nothing to this day.