CM1000v2 - Do I have a defective modem?

About a year prior to getting this modem, I purchased the Netgear router. I had an old inexpensive Motorola modem which died. There's a relatively new, tested and currently in use, dependable coax cables connecting both in and out. There are no splitters. One coax cable going to one Netgear router. It sets in one isolated but cooled and vented area. New cables in and out. Everything worked fine until the old Motorola modem died. All I did was replace that modem on 3/28/21 with this new one. IT WORKS FINE unless there's an intreruption with the COX cable internet service and then the modem does not reconnect to the internect until it's turned off (and I wait a while) then turn it on. From that point on, all is well until the service is interupted. It's impossible for me to make it any more clear then I have. I don't buy new and more expensive equipment to spend time trouble shooting and in fact don't have the time to spend. As I stated before, if I get get it to reconnect once the service comes back up it will have to be replaced. My time comes at around $100 an hour so just taking time to write all this is equal to a new modem let alone going through a bunce of trouble shooting and the time wasted attempting to get support on the phone (a mean joke). We don't buy new electronics to trouble shoot issues with them. They should be built correctly so they perform properly, which this one does not do. Unless Netgear cares to stand behind their products, it'll be headed to Goodwill after I get the replacement and it'll be my last Netgear product.