How can I get my jewellery back?

Hi, My jewellery lies in a joint locker with my husband. My husband is the first holder and I am the second holder. The account from which the locker rent is deducted is in my husband's name. I was forced to put a mandate on the locker for not allowing single operation as my in laws and my husband were pressurizing me to hand over the locker key to them since they wanted to take away the jewellery.They had been torturing me throughout the 3 years of my marriage demanding dowry from my family. Finally my husband abandoned me when I was pregnant and left me to suffer a miscarriage. I have filed 498a and a DV case against my husband. The bank has refused to allow me to operate the locker although I have the locker keys saying that now even if I withdraw the mandate I cannot operate the locker without my husband's consent. My locker in in Kolkata and I stay in Bangalore. My 498a and DV cases are in Bangalore. My advocate in Bangalore said that I cannot ask for my jewellery back and cannot do a stridhan case as the locker key is with me. Can you please suggest the best method by which I can get back my jewellery with lesser hassles?