Disappointed in the Airtv.

On 26 of March I made a deal with Symone Reddy. I was suppose to purchase 2 dstv explora tv's as well as lifecover(with they add as a bonus). I thought about the deal and the very next day I cancel it in writing. Annelyn David responded to my email and informed me that everything was cancelled. I replied that I was satisfied with the outcome. I never heard about it untill today 20 April 2020. They delivered one of the decoders. How can I trudt tjem if they go back on an agreement. Now I am stuck with tje decoder and as you now we are in lock down. I am very very disappointed in the way I was treated. I will never ever do business with them again.