Unhappy customer

Worst service ever. I'm on a unlimited data plan for 299 per month. For the last whole week my network won't connect from 17h30 until next morning. I switched my phone took out my sim and restarted still nothing. I logged on the app ran a diagnostic network and submitted a ticket every day,but no consultant called or fixed the problem. I have tried calling the call center but no answer. Worst customer service they are not available fid anything