OnAir stop being *****!

OnAir TV. One of your sales agents called me on the 2nd Jnaury to pitch a DSTV Streamer to me. I did sign up. However I decided to cancel on the same day that I signed up. I called your customer service centre. It rang for a while with no response. Then I sent an email to your customer service email address to notify them of my cancelation. One of your agents responded to say the query has been escalated to the relevant department . The next day I get an sms saying the decoder has been sent to the Courier company and will be delivered soon. OnAir how do you still send out a decoder for an order that has been cancelled? I send a follow up email to the agent who responded to me and she responds to say that the courier company has been told to take the decoder back to the warehouse and if they still come through to deliver, I must not accept the delivery. On the 9th January, the courier still comes to my place with a decoder, after I have been told that OnAir told them to take the decoder back to the warehouse. The courier guys says they were never told to take the parcel back to the warehouse. I tell him to go back with the parcel, as I will not be accepting it. Then on the 11th OnAir you send me an sms saying "Congratulations, your decoder was delivered". This is an order that I cancelled same day after I signed up. You decided to send it out with Courier after I notified you that I cancelled. You **** about telling courier to take parcel back to the warehouse. You send me a message to say decoder was delivered after I turned the courier company back with the decoder. I don't know what game you are trying to play, but please don't try play this on me. Please refrain from sending me sms'es pretending as if you have not received my cancelation