GE counter top microwave

We have a GE microwave counter top model JES1358WL01 whose turntable will no longer turn. No parts are listed anywhere to repair this problem. GE tells me the only parts available are the glass turntable and the device it rests on to enable it to turn. Every other GE microwave lists a coupler to attatach turntable to motor. Does anyone know if any GE parts for other models would match this microwave? We bought it a Wal-Mart and GE says it is a throwaway. I do not agree.

Thanks, Everett