Internet dropping out multiple times per day

Cable is directly connected (no splitters) to modem.  Coincidentally, I recently installed a Docsis 3.0 gateway modem SB6580.  When working signal levels are all fine.  How do I get the neighborhood lines checked out?  The tech said it would take numerous complaints.

Not sure if any of the neighbors will report this, since modems reboot and come back online.

btw.  my modem takes a long time to regain connection (minutes).

************Modem log deleted because MAC address (personal info) displayed.*****************