Booking.com and its properties are a ****. BOSTON STAY hasnt refunded

I booked an accommodation in Cape Town at a place called BOSTON STAY for the 2020 Easter Weekend via Booking.com. Due to the lockdown, Booking.com send an email advising me that I can either cancel or postpone my booking. I opted to cancel because we were going down to CPT for the Two Oceans Marathon. On 01 April I got confirmation of the booking cancellation with full refund. To this day , I haven't received my refund and calls are not taken by the property. On the other hand I tried several time to get Booking.Com to assist but their platform doesn't have much of information when it comes to escalating matters of this nature. I have attached the email I received from them.

Hi Makgotso Masehla, You recently requested if BOSTON STAY could cancel your booking, despite their cancellation fee policy. Congrats! They made an exception for you and let you cancel for FREE. You don't need to do anything else! For any follow-up questions, contact the property directly at +***. Thank you, The Booking.com Team