I think in my area its been changed to four service calls and not tows.Why would you need a towing truck 4 times a year? That means you need to change your vehicle.
I had a problem with my Prius where the alarm stopped working and the door locks would just shut and needed a couple battery jumps as well.
Turns out the accessory battery was bad causing the alarm to close the locks. Used up all my service calls for the year in three weeks.