No feedback, communication nothing? DSTV Multichoice very poor service

I received an SMS for a promotional offer of a price lock Decoder. After responding twice to this promotional sms a call centre agent contacted me and completed a questionnaire for approval, once approved I was advised to send a bank statement to ********** which I did. This transaction has been pending since Desember 2018 I have not received the decoder or any further contact to explain what is going on or where I am in the process. I have since been contacted by 2x telesales agents that ask if he would like to transfer over to a debit order payment, and after explaining to them I have completed everything for the new promotional decoder and debit order, they advise that they will contact me back and never do. I have since sent 2x emails to the given address and no response. We are now nearing the end of February 2019 and STILL no closer to concluding this transaction that was offered to me. Multichoice (DSTV) service is lacking to say the least. Why offer a promotion if you are not willing to provide what is promised?