Cancelled booking and still waiting on refund

I made a booking for 3 people at the Ashby manor guest house in Cape Town in January 2018 for 3-7 March 2018,made a deposit of R2400.00 but had to cancel because of the water crisis in that city. I was promised my money back 4days after cancellation but till today I still have not received even after countless emails and phone calls, they do not even bother responding to my emails.