I brought a cordless vacuum cleaner for repair, which got water in it. I couldn't open the motor myself, so I gave it to them.
A week later, they called and said it burned down, we can't fix it, and we can't order spare parts from China, when asked which spare part they rudely answered me, what difference does it make, you still won't understand anything and even if you do, you won't be able to order.
I went and got it. After a while, I found a way on the Internet to open it myself. I opened it and there was still water trapped there. I cleaned the motor from the water, dried it for 24 hours and after that time I started the vacuum cleaner and everything worked. Terrible service. May service.