Welcome to this user forum.
Are you referring to this thread https://community.bt.com/t5/BT-Infinity-Speed-Connection/BT-Infinity-2-WAN-Connection-Dead/td-p/1805...
Is this the issue that you have?
You may be in a similar postion to people in this thread
As regards compensation you are entitled to a days rent for each day you are with out broadband starting on the second day after you have reported the fault.