Dvr playback issues

On Dec 9 in Zio code 92692, the 1000 HD channels were retired.  HD channels are now 2 and 3 digits.  Since this change, shows recorded freese when watching 1/4 to 1/2 through viewing.  TV picture freezes and unable to forward or reverse picture.  Boxes have bedbugs reset 3-4 times a day with no improvement.

wait times at cox customer service are unacceptably long for help.  Anyone here experience the same problem or provide any insight?