I started with AAA when I was 16 and earned my drivers license. They have for years given me excellent service when needed, and with my family growing and learning to drive they were needed many times. I left AAA 2 years ago after 3 family experiences similar to yours. Tow truck taking car to a safe location, then coming back in 2 hours to take us to a repair location...now closed so repairs had to wait till Monday. Not even offering to call a truck when son had a trailer but did not have the RV upgrade on his card...he would have paid, but they would not even make the call. Messing up the reservations for our trip when we traveled to Hawaii. Gave up, joined CoachNet. Sadly they were not able to find a service person on Highway 1 in Washington near Port Angeles on a weekday in the morning. They could not send a truck until the following day. We found our own help and just paid out of pocket. I now have Good Sam. We used them once for a flat tire on our family car. Slow response but very pleasant and all ended well....it took 45 minutes to reach us in a large community just outside of Los Angeles. But they came, and changed the tire.
I truly hope I, and you, never have to call ERS for our RVs. Not that I don't think they will help...I just don't want to be in position to have to call ERS.
Happy Trails.