Booking.Com is *****, you have nowhere to compliant as they are a foreign company

I made a booking to Mpumalanga, same day decided to cancel it as I'll be going to Cape Town the following month. The Booking.Com allowed me to cancel same day at a R0.00 cancellation fee, the system also confirmed i should expect to receive my funds within 8 -10 days. After a week i call them and they are telling me unfortunately the trip is not refundable. Their system is not trustworthy, and their customer service consultants are rude, and you have nowhere to compliant. They say they can't send any email to myself; they can't pass me to their superior and they hang up a phone in my ear. Book there at your own risk.