Refusal to refund my deposit

I booked my move with Excuss Logistics. Theq quote was R2,500.00 and I paid a deposit of R500.00. When I had to confirm my move dates they sent me a quote for R9,200.00. I immediately e-mailed them to cancel my move and refund my deposit. I've sent numerous e-mails and what-app request's but they ignore all my requests. I cancelled the move on 20.11.2025