Bad technical assistance

I have called the contact centre to report a signal issue with my decoder, spoke to two ladies, whom after attempting to assist me, and did not know how to assist me further, drop the call on me, spoke to a supervisor thereafter, still no solution, I was advised to get my installer to come out at my own cost anf fix my signal issue, decoder is like 5 years old, really, an installer? I need this signal issue sorted, maybe a competent manager will call and resolve my issue, wasted all my airtime for no solution, 2 days and counting, please get back to me and sort my signal lost issue out, the issue is from the 24th October 15.