Sorry to hear that you have received an overbooking. Please report your overbooking HERE so that we can investigate why this happened. We will get back to you asap.
We really understand the problems this can cause our customers and we apologise for the inconvenience.
The best action for you to take would be to handle this overbooking as follows:
1. Try to reallocate the guest or
2. Contact the guest and ask them to cancel the booking or
3. Contact the channel and ask them either relocate the guest themselves or to cancel the booking
We are not able to assist in contacting the channels are reallocate the guests.