Dstv installer ******* in ballito

I live in ballito. I found a company on the web that does dstv installation. The owners name is Don tel *** or whatsapp ***. He quoted me R 4500 for an installation. He took a deposit of R1300. I finally got the job done for R700 and he refuses to give back my deposit. He has since blocked me on whatsapp. His initials and surname according to bank account is N Hemraj. Please dont deal with this *******