False advertising/ failure to follow through on services

Absolutely terrible company & customer service, but unfortunately it’s all that’s available.

pay for 1000mbps, and only get speeds of 35.5-250mbps with 1 device connected & “new” router / modem advised by tech support. Tech checked wires for 2nd time in 3 years living at address and as advised wires are fine. Tech advised that as a company xfinity will not give the speeds as they advertise. 
ongoing issue with company for the last 8 years I have had them as a service & zero resolution or explanation when asked for reimbursement for failure to follow through on services provided on xfinity end. Company eager to take money / turn off service for no payment but will take zero accountability or action when giving money back. Working on this request for the 2nd time, this time around is going on 3 weeks now & every supervisor I have spoken with had failed to log a request for reimbursement as they advised & promised they did when talking on phone as well failed to log complaints against reps & previous supervisors for not logging notes / telling what they advise they did on the phone ( reimbursement request). 
company will not log issues against other agents for failure to not do as they tell their customers as well zero accountability. 
Reached out to local news station to help investigate & see if they can assist with getting answers & maybe some resolution.