Transbus Africa bad service

I've been dealing with a lady named Preeti from transbus africa. I hired out a bus that ended up not being used we then agreed on a 50% refund since I didn't use the bus. It's over a month I still haven't received my refund. She sent me a proof of payment on Friday but the money is still not in my account, I even sent her my bank statement. So I don't know if the proof of payment is also fake because I've been trying to get my money back for so long now. Im just annoyed by the terrible treatment and bad service.