BAD BAD SERVICE

Since the 1/11/2019 I am losing network coverage. After phoning every day to their Techinical Department, getting reference etc. I was told to wait 48 hours till somebody can fixed my problem. It is now more than 72 hours and I am still experiencing the same probem. Even Wrote a letter to the Customer Care department - NO FEEDBACK. Going to can cell my contract because it is clear that they do not care about their Customers.