Unable to record more than 2 shows at a time

For 3 months now, I've been going back and forth with Xfinity to try and allow my DVR to function as expected.  I have not been able to record more than 2 shows at a time.  The 3rd show gives a "recording conflict" error.  I've had billing confirm that I am paying for the service to allow up to 6 recordings at a time, yet I am unable to utilize this feature.  A technician came out, swapped the cable box in an attempt to use the box for DVR storage instead of the cloud, but that had no impact.  He was on the phone wit support and they filed a ticket to the National ATS team.  After a week of hearing nothing, I began calling again only to find that they closed my ticket, despite acknowledging that they took no action to fix the issue.  When asking them to reopen the ticket as the issue still exists, I was told they cannot reopen a ticket.  I was told they would need to schedule another technician to come out and try the same fixes as the other, then he could open a new ticket if he was unable to fix the issue.  To date, 3 months in, I still cannot record as expected, yet I get charged the fee every month. 

How can I just get my DVR to work as expected, since I am paying for the service.