How big & how expensive a job or is it time to call it quits?

What is your question?

The ATS, ABS & Brake lights came on. We had the car towed and after a diagnostic we were told that the cable in the rear wheel had broken causing the ATS to deactivate. Then after the "repair" the lights came back on and we had the car towed again to the shop. Should we continue? Within the last 2 months we've bought 4 new tires, had serpentine belt, pulleys, water pump changed along with an oil change (synthetic oil). How major is fixing the latest problem. The car otherwise is great but we hate to continue if it's really time to let go since we can't continue with a money pit.