Loosing my mind please help

[Joji]

Hi,
I brought my boxster in to get my water pump fixed. With the replacement and belt and a broken oil line it cost me $1600. Then a month later the coolant started spraying on the roof of the trunk and check engine light came on. It is also having trouble starting after I have been driving it for a little while. It starts up fine when it is cold.

Now I brought it to a Porsche dealer instead of mechanic to make sure they would fix it. I just spent another $800 and they said some oil line was bend and the coolant camp was stripped so they put a new one in. I just got home and the check engine light came on. It stalled going in reverse. It took 20 seconds for the car to turn over and there is coolant and steam coming out of the coolant cap again. Same problem from both places.

I am about to loose my mind. Does anyone have any clue what is going on. Someone who is not a mechanic said that they think the head gasket has a crack and forcing the coolant back into the system or something like that.

Anyone experience this
thanks