How do I get info on guests?

Good day

The situation that we are currently facing is as follows:

We bought a guesthouse which was on booking.com.

Unfortunately we have to cancel 2 bookings, but the previous owner already cancelled her account with booking.com - thus we do not have the contact information of these guests.

I phoned a booking.com number and was told that she need to confirm the details and then will call me back.

Any advice will be helpful,please.



Previous bookings are the responsibility of the previous owner and should have been relocated by BdC.