Poor service

One of the sales person from multichoice called me to sell their product, which is DSTV Explora and a price lock for 2 years at an additional cost of R59 per month. I was told that the deal includes free installation and they will send the installer within a week. I agree to the product and the decoder was delivered on 23 October 2020, after a week I called them to send the installer as promised but no one came, and called again after 2 more weeks and they promised to send the guy again nobody came, I called for the the third time and as usual I was promised but I decided to cancel the deal as I only got empty promises. I ask them to come collect their product as I was no longer interested because of their disappointments. They promised once again to send a corrier to collect and again nothing happened. In December 1st I was so surprised they debited an additional amount of R120 extra from my account. Their decoder still laying in my house sealed in their original box, I am so disappointed in the service and the only thing I need from them is to come collect their stuff and return my money which is R120. I am not interested in their products