can i exchange my dvr for a new one mine is defected?

Sure you can.

Of course. I would call first and let them know that you are having an issue and ask for a credit for the time your dvr has been having the problem. DVR service is about 11 bucks, if you have a verifiable history of it not working, they should have no problem giving you the credit.

I'm sure you can, the staff was helpful at this location.

Sure,if it's from Spectrum.

Yes

Yes you can...