How long will it take for Canon cameras to reach the maintenance station?

It is understood that my camera 750D has been sent back for repair for 20 days. However, there is no news at all. It is estimated that it will take half a year to repair and not send it back, or if your camera has passed the warranty period, he will inform you that you need to pay for maintenance. Also, don't go to ant photography to buy a camera. I wonder if the camera they gave me is a second-hand camera. It will break at a brand-new price in a few weeks, and it will break for no reason.