Beware of The Black Knight Jewellery. DO NOT BUY

I ordered and paid R15 600 for my ring in September 2015. I was specific in my instruction to them, about my ring size. Despite that they made the ring too big. Then i had the ring sent back to be resized. I got my ring back with the correct size and used it for one weekend and then the diamonds started falling off the sides of the ring. I sent it back in November 2015 and i have been waiting ever since for my ring or my money back. The lady Cathy is absolutely dishonest and she doesnt reply to emails or answer phonecalls. I only ordered from them because they were a supplier on Bid Or Buy and trusted Bid or Buy. Please give me Veenal's contact details so i can try to recover my money from these people.