Intermittent RDK error codes

Need info on intermittent issues with the cable box freezing or being stuck on the welcome screen.  There is nothing on the outage map for my area, but the service stops at least once every two days (sometimes for 5 minutes, sometimes for 2 hours).  Currently seeing error code rdk-03033.  A new line was recently installed, so I don't think the issue is on my end.  Who to send a DM to?