Birchwood hotel had me cancel my stay, and i losty R2000???

Very disappointed with booking.Com together with Birchwood hotel. Called them in time to modify my stay due to grand parent illness had to modify my stay, paid them R2000 for 1 day stay on Saturday, mind you their so called reservations manager was nowhere to be found, on Monday upon return they cancelled my stay, ***!!?? Could have usedy hard earned money on something useful, super dissapointed at them both.