Car not drivable after repairs

Was involved in a car accident on the 22 Jan 2025, head-on collusion. Put a claim (***) and it was approved, and a Panel Beater was approved to fixed it. The work was done and I collected the car on Friday the 14 Mar 2025. Didn't use the car for the week since I was working remotely. Just drove it for a short distance. Started using it on the 24 March as I was driving to the office, it complained about water level, bought anti-freezer and refill. On the 26 March, same problem, overheating, put anti-freezer again. On Thursday the 27, same thing, then I called the panel beater, I was advised to bring it back the following day, Friday 28 Mar 2025, as I was driving I couldn't reach the place, they send a tow truck to lift it up. I asked them if they test drive it before releasing it and I was told that they are not allowed to test drive customers vehicles. Maybe they could have picked up the overheating issue since they replaced the radiator. To date I haven't received it (15 April 2025). I am told that the Water pump need replacement and it wasn't part of the accident damage and my car is old. Was supposed to travel now in Easter, but I can't, since they took the car on 28 Mar 2025 and nothing has happened.