Booking.com complaint: I paid for a non-existent hotel

The details of this case are as follows:

– I booked 9 nights via booking at Golders Guesthouse, London, from June 11 to June 20.

– Due to airport delays, which are common these days, I arrived at the alleged guesthouse address a day late. I notified the guesthouse contact accordingly and in advance, as appropriate.

– Around noon on June 12, I arrived at the address that was provided by Booking- 29B Golders Way, London, NW11 8JX, United Kingdom. Someone opened the door and said that it is a private home and not a guesthouse!!

– After searching around the neighbourhood and trying to call the property endless times, I called Booking to notify them that we cannot find the place. The customer support team tried to reach the guesthouse a few times, but there was no answer as well as no documentation of other guests ever staying at the property.

– After speaking to many representatives, I was eventually connected to a supervisor who promised that the team will investigate the case and that we will receive a refund for the new reservations we were forced to pay for. He assured us that the issue will be resolved within 48 hours.

– During those dates we stayed at 2 different hotels in London- Golders Park Hotel Britannia International Hotel- at a total cost of £955.30.

Needless to say, I never heard back from the customer support team. I call them every few days and am asked to describe what happened again and again. It is clear that this issue is not being handled at all by Booking.com.