I am short and need to raise the seat several inches

 

If you've already raised it to the maximum height, the simplest thing would be a cushion other than putting spacers and longer bolts which may not be the safest thing in a accident

 

Look on Facebook I saw some advertising a metal block that will raise the seat. If I see the ad again I will post the info for you.

 

Raising the seat would be easy if the rail bolts were parallel, but they are not. The forward rail bolt is angled which requires the seat to move forward as it moves upward.
A longer bolt and a metal spacer for the forward reattachment is straightforward. However, now the longer bolt at the rear will not line up with the threaded hole on the floor.
It is possible to fabricate a metal contrivance that will accommodate this problem...I did but I prefer not to share the design due to liability.
Good luck....you will figure it out.

 

Base model? (Cloth seats, no fog lights). If so there is a lever on the left side of the driver's seat (North America). Use that lever like a pump to raise the seat.
Limited models have power seat adjusters. If they are not working, then most likely the relay is bad or a fuse has blown out.