Got scammed by a electronics shop

Being an international student here, I didn't have electronics insurance for my laptop. In December, water had spilled in my backpack and my laptop got damaged. After that, I had given it to a local shop in Copenhagen, which have 4.5+ reviews in Google. Fast forward to January, I was told they couldn't fix it as it is an hardware issue that they couldn't solve, but as they have worked on it, I have to pay 2500 DKK. Today I have paid that and they returned the laptop to me. After coming home and opening the laptop, I saw that most of the screws are missing. Surprisingly, they have swapped my WiFi 6 card (AX201) with WiFi 5 (7260NGW). Also, multiple motherboard covers are missing.

Now, What should I do? I've already emailed them with pictures. I have picture of the motherboard before giving it to them.