Both of my windows don't roll up or down now. It use to work on and off, now it hasn't for a while. I went to the dealer and they told me it's the window motor.

It just doesn't sound right to me, how can both window motor blow up at the same time?

It sounds more like a window relay or a fuse somewhere that I don't know of.

So what is your thoughts on it?

This is a c70 coupe not convertible.

 

Possible. I would say the regulators are bad.
Test for power at the window switch. If you have power then the motor or regulator is bad.
The have plastic guide wheels that the cables ride on. The wheels are what breaks.