Ipod classic restore not working?

So about a week ago my main ipod, a 160 gb ipod classic has been having tons of issues, i don't know if they are related in anyway. First the center button became stuck under the click wheel. Then the ipod was needed to be restored. I did it and that barely solved anything, needing to restore it again after a couple of days. No matter how many times i restore it, the ipod is not being read by itunes and cant sync at all. If anyone knows what is going on, how i can fix it or how much it costs that would be awesome. Thnx