Fibre Down For A month-No Service

I had problems with my fibre and according to the technicians it was due to my router not accepting my password. Since then they arranged for my router to be picked up(initially turnaround time 1-2 weeks) and Its been almost 4 weeks from the day they picked up my router and 5 weeks that i have no internet. I have asked for feedback and every time their consultants will get back to me. Yet every time i just get no feedback or progress on this. Yet they are quick to take my money come month end. I am now tired of their poor service on this and do not know what to do anymore.