Deposit not refunded after 3 months

Three months after I requested to Mrs. Chantal Rudman, owner of the Olivelli shop in Norwood, to be refunded for the deposit of my wedding dress, I still haven't received any money from her. I contacted the headquarter and they told me that Mrs. Rudman being in the incapacity of proving that she used the money to book my dress (no receipt, no bank statement...), she is left with no option but refunding the deposit. She was supposed to send me two weeks ago the plan for the reimbursement but she hasn't and is trying to lossing time. Meanwhile she call at my work to insult me: \ I don't give a shit of your situation""; I have a lot of witnesses of the unprofessional way she talked to me and the kind of customer service we can expect from her. Now she is trying to blackmail me; refusing to tell me how she is going to refund me if I don't take out my complain from HelloPeter. I will kindly advise any brides to avoid this shop and this brand;as the headquarters is not escalating this situation."""