Internet down for 10 days

My internet line was activated on Feb 2nd and then went down on Feb 9th. Today is Feb 19th, so 10 days without internet. My ISP is Rocketnet logged a ticket with Vumatel - 44940. Been escalated multiple times, 2 techincal guys came and checked everything and said everything is fine within the home and with the line, they said ONT box needs to be reconfigured. Still now nothing has been done, everybody promise something when i call them or when i see my complaint on social platform but nothing has been done. I live in a complex, the line is also newly installed. No proper support team, support system. Call center agents even lie to you and tell you that your internet will be up by today evening and you wont be able to speak with them again.