Independent Set Top Box — regarding set top box not working

I had been buy 2 independent dish tv connection in Jan 2019.on 2700 Rs and 1 year free subscription but its worked only 2 or 3 month properly.After 3 month stop to working.I called to many time to customer care but not responded.
So I need to return 9 month pending service money by independent dish TV as soon as possible.
Because this service valid for 1 year.
My mobile no is [protected]

Following Are details.
1)CA ID= 05F7FC54