Residential cable replacement

My son Rhys has just moved into apartment 4 at 904 Arcadia Drive, 61704.  After connecting internet service with Xfinity / Comcast, I received a message alerting the service wasn’t optimal (see below);

Hi Roger, it's Xfinity Assistant following up.

 

After monitoring your Gateway, our quality tests show you're not receiving all the benefits and you may be experiencing connection problems, like slow speeds. A technician appointment is recommended to resolve the issue.

 

Would you like to schedule a free technician appointment now?

1 - Yes

2 - No

 

Txt help or stop

Msg&DataRatesMayApply

 

The responding technician determined the main cable from the distribution block at the rear of the parking lot to the splitter on the side of the building is defective.  He indicated a replacement main external cable to restore service, but requires landlord approval to do so.  I have requested this permission on your behalf from Redbird Property Management in Bloomington IL, and would appreciate your assistance in getting this work completed in a timely manner once approval is received.  Please contact me with any questions. 
Thank you,

Roger Tucker