Problems with Werstatt

Hello, I just recently brought my privately acquired Ford Escort (600 Euro) into a free yard because it has lost a lot of cooling water. The drive belt of the servo pump was renewed, the coolant thermostat was renewed and a screw (motor encapsulation) removed and mounted, because water has leaked out here. Then the Escort was connected to a pressure tester all night and then a 15 km long peobe drive took place. The car lost according to the workshop master No more water. Repair costs 168.62 Euro. Now to the problem, after about 200 km of car ride I was of the opinion that there was again some water loss there. I replenished water, but above the mark, so more water than necessary. After another 200 km the water sank to the mark. So went back into the workshop and had to look for it again. The workshop master. which seemed to me very competent on vacation, but the boss was there. He explained mi r, that the water always sinks to the mark, that would be normal. But he wanted to look again with caution. Now he called me and told me that the wedgeriemem was no longer in order and the water pump leaked and the repair would cost about 360 euros. Since the car has 2 years TÜV, I agreed to the repair. One day later he called me again, that the repair would not be worthwhile, because it is not foreseeable what costs would arise. Cooler is also no longer the best and there are also some knocking noises, which could possibly come from the Ventielen. He meant a repair not without himself, because who knows what else comes. I then wanted to pick up the car again, but that was no longer possible, because he cut off the timing belt and scratched around the water pump, which is now leaking too. It all seems very funny to me, because the workshop master should have noticed this during the first repair. I have the feeling that something was screwed up here. Now the car is standing on the workshop site and I have to finance a rental car from the workshop. I wanted to have the vehicle back in its original condition, which apparently does not work, because it had to lower the belt, because it was no longer the best and to get to the water pump. To conclude, he said that I should repel the vehicle by 100 euros and get another one. In the original state, because I know a private screwdriver who could fix that for me, there should be something to fix. But to get it there, even towing costs can be removed. I would be pleased about good advice. Greetings from Rudi