Why does my car continues to overheat ?

What is your question?

My car kept overheating and my mechanic found a leaky gasket that I ended up replacing only to discover I had to replace two thermostats with it as it was all located in the same place/unit. Unfortunately, my car continues to overheat very rapidly. The water reserve boils and the radiator is still full of antifreeze, but my car will still go from stone cold to super hot in a matter of minutes. Any ideas or suggestions?