TT Connect to be avoided at all costs!

I have been having problems with my fibre line startin from the first week in September and I have been complaining and phoning DAILY. The technician eventually came to the property and checked (Job Card # 105766) the result was that the 'box' is fine and they blamed Nepic, Nepic came out and replaced the router, the fly leads, recrimped all the wires. The problem is that WHEN the connection is working it works well, however it is very unstable and line drops intermittently. I run my business online and offer Skype lessons, which is impossible with a line that is constantly (and unpredictably) up and down. I have open ticket/s, this issue has been escalated (what a joke) to the hilt and still the situation is not resolved. The lady (Zarina?) that is supposed to phone me back to date never has and no one seems to care. I have spoken to so many people at both TT Connect and Nepic I do not care to list the names, and anyway by now they are a blur.