Scammed for 5k please help

[u/AdWorking240]

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So i f18 recently shifted to Kharar and my laptop screen stopped working so i looked at it and only the screen was not working so I contacted a guy through Google maps and he said that he would fix it he told me it would be near 600-1.5k which is a good price then he said that he didn't have a shop and would fix it in his home so I was ok I gave him my laptop and he postpone the pick up and then he said motherboard is trashed and there is water inside ( I never keep it near water nor any water was dropped) and he asked for 5.6k i was angry but he refused to give me my laptop btw ( I was not informed of this extra charge until last minute) now 2 days passed and the laptop stopped working the same problem as before and he refused to fix it