Gerda not deliverying products fabric provided

We met Gerda du Toit at Greenlyn Village Market at 13th Avenue in Menlo Park - where she had a stall selling handmade and tailor made clothing. My wife provided her with various fabrics months ago for completing some customized clothing. Today my wife received a disturbing call from her that she will not return the fabric and that we don't have any proof that she provided her with any fabric. She also called me - the husband - a *** trash and that everybody is gossiping about my orientation. We are seriously considering opening a case of name slandering and also a case of theft, initimidation and name calling. This woman takes chances and uses other peoples fabric to manufacture clothing and then refuse to give it to the original owners. I have been in contact with several markets - BE AWARE WITH WHOM YOU DO BUSINESS AT MARKETS. GERDA IS VERY DISHONEST! I HAVE ALL THE SMS'S SHE HAS SEND TO ME AS EVIDENCE AND ALSO TWO RECORDINGS OF HER MISBEHAVIOR.