Foreign 3rd party customer (so called) service couldn't help me with my reservation at Portland Maine at all.

Rented Avis car from Boston-Logan airport with vibration that shook steering wheel, floor and dash above 60 MPH when driving to Portland, Maine. This was not evident in Boston as speeds were below 55

I don't know where to start. If I could give a minus one star I would. We picked up our car at the Portland Maine airport Avis location. We were told that the rental agreement and all paperwork is ema