LOS flashing red

My internet connection has been down since Friday (30/12). When I first had the service, the install team took ages and so I installed it myself and it had the same issue, but after some days it started working (LOS LED stopped blinking red and Router wifi LED turned green).
However, now it turns out it didn’t fix itself. I already chatted with some live chat operators and I got the information that a GUIDION operator would go to my house, but once again I haven’t received any contact from them. I am paying for a service that I can’t use, and the worst part is that I have no clue if someone is on top of it. The worst part is that when they contact me it will take weeks for the repairment...