Sold me a used car that within a month of owning w...

Sold me a used car that within a month of owning would not start. That car has been in two different repair shops for over 2 months total and I haven't even done my first oil change on the car. I thought I could buy a used car from a dealership and have little to no problems after owning many used private seller's car that didn't work out. When talking to the manager of used car sales he said "sorry to hear... we can't do anything about it but provide any information needed." If I can't trust a used car from a dealership then my next car will be new