ROUTER PROBLEMS!

We renewed our contract in the beginning of the year and got a "new" router. We get more connectivity issues with the new router than we have ever had. In this last 4 months we have been going through SR#'s like crazy. We have concluded that there is definitely something wrong with the router. Customer care services has reset and set up our router countless times only for it to loose it's settings a few hours later. This is ridiculous. This problem was shown out by the technicians a month ago. We get Internet link to the router, but none of the devices connects to the router with neither wi-fi nor Ethernet. We are not getting the service we are paying for. I phoned this morning again for a previous SR# that has been neglected again.