The company I tow for will only use a "flatbed" on all 4wd, or awd vehicles. On medium trucks with either manual or
auto trans, we pull the driveshaft if the truck has to be towed from the front. Regardless what people say, we will
take the extra time to pull a shaft, or axle. It is a whole
lot cheaper then paying for a transmission repair... If
you need further proof, find an AAA "towing" manual. They
print one every year, and are available to towing companies.
The book clearly explains tie down points, and towing procedures for just about every vehicle made. I agree with
what others have said here, if this towing company has
been towing vehicles on their drive wheels, they have been
causing damage...
Jim