Cancellation of booking: Prime Guest House

On the 30/06/2025 to 02/07/2025 I booked at Prime Guest House when I arrived I realised that two rooms that I booked were not necessary to them then I arranged with manager to cancel the booking and book only one room for my family and pay cash, in the process of occupying room manager said I must and i will get my refund within three working days which I didn't receive then i contact the booking.com and the consultant said my booking their policy was no refund but I'll only get my refund if the Prime Guest House agree on waiving their policy for booking.com to be able to refund me which he did because they send me proof showing that indeed they responded to the email of booking.com to refund me but till today i haven't got my refund i don't whats holding them back to refund my money.