How long is the wait for assistance supposed to take?

First they have to process your 'claim'
Then they have to get authorization to contact approved vendor (tow company etc)
Then approved vendor has to check schedules & availability
Request is sent to dispatcher
Dispatch contacts driver and gives them the new assignment/directions
Driver continues with pre-arranged schedule
Driver THEN heads in your direction.....and you are not at the exit
Driver calls dispatch.

Process starts all over

And YET it only took 90 minutes.
Consider yourself fortunate