I took the laptop to repair the usb, but I turned ...

I took the laptop to repair the usb, but I turned on the laptop after I took it home, but the network and Bluetooth were all hung up. When I took it back to the repair station, the repairer said that the network card was broken after inspection, and thought that I repaired the same day Or I haven't used the Internet a few days ago, and "repairing usb will not affect the network card", so I firmly deny that it is a problem with the repair center. It is really speechless!