NETGEAR CM400 MODEM RMA

I have always liked Netgear products but will never purchase again. From the time I purchased my netgear cm400 modem, my modem disconnects and reconnects constantly. I work from home quit a bit and this is very frustrating. I would say on an average 10, it connects and reconnects every 15 minutes - or less. I went through about 3 months of trouble shooting this with TWC. They even ran a new drop to my home. Nothing they did corrected the problem. The first few months of researching the problem turned up no results. finally I researched again and found the problem I am experiencing is a known and rather common issue this modem. Once I discovered this I called into Netgears tech support thinking they would correct the issue. Boy was I ever wrong! The guy I spoke with stated this was a know issue and knew exactly what needed to be fixed, but but I was out of my 6 month warranty period. Stated I would need to pay 39.99 + for them to fix my modem. What a joke! You know there is an issue with your product and wont stand behind it! This is the last Netgear product I will ever purchase! if anyone else has experienced this issue and knows how to fix, please email me. I would really appreciate it!! wruddy@outlook.com