What's going on w/ my DVR

Because of our busy schedule from work to home, Roger and I used the DVR to record all our favorite shows.  we will watch them once we get a chance.  But lately we are having trouble with our DVR.  We thought maybe it is our cable box.  So we called the cable company to give us a new one.  We thought everything should be fine.  But last night hubby and I sat to watch some of the shows, guess what a lot of them never been taped.  I think it is the cable company.   They sucks.  Sorry for my french language, lol.   I can't wait the verizon to be done installing the wiring in our area.  I will fire comcast in a heart beat.  Right now they are so lucky because they have no competition yet.