Working perfectly one day and the next nothing 😈

I spent 25 minutes and all my airtime on a phone call to hear that I needed to take my decoder to Game to be tested. I played around with settings and got it working.. for one day....then it started giving me the error Stays no signal... Good heavens did there system give them a report that there was an old decoder that was still working and then they cut my channels so that I am forced to buy a new one.... I have sent several WhatsApp messages and even while it showed that Whatsapp was online... Now nearly a week later I am still not able to view chanel's although it shows that my decoder has been activated... I would appreciate a WhatsApp response as I am not able to answer my phone while working...