Did you do this by yourself or was it like this out of the box? I 've heard that many brands do not replace motherboards for bent pins.
Do not get desperate though. Unless the pins are not broken, you can repair it. You need a magnifying glass and a tiny screwdriver or needle, and to ground yourself. With patience you can recover those pins and align their position based on the others.If you are not sure you can do this, go to a specialist.
The board is recoverable.