Handed over for no reason

I purchased a explorer decoder from them over the phone. They sent me 2. I immediately sent back the 1, because I only requested one. Which I paid in full. They did confirm it to me that it was paid in full, and it was cancelled. I received an sms saying I have been handed over for R302. I phone On air and spoke to Shanaaz Samad. She told me that my account was handed over and need to speek to MDB onair. She can't give me any info regarding my account. Only that the amount overdue is for a second decoder, which I don't even have in my house or ever purchased. She doesn't want to give me a statement or any other info. Just I need to speek to MDB onair.

I did phone them more than once. So unprofessional as can be. I just can make arrangements to pay. WHY MUST I PAY FOR SOMETHING I DON'T EVEN HAVE. They can't give me a statement. Just want my money. Very RUDE as well.

Why must my credit rating suffer because of something I did't purchase or don't even have. Where is the proof of the amount I need to pay. When I ask something and they don't have the answer, they drop the call.

Where can I get any info of what they are handing me over for. They did confirm my first and only decoder I have is paid in full.

Then they want to ask why they loose clients.

They need to clear my name asap.

Regards Adelle