Update on an ******* purchase8 on my account please

On the 15th of March i sent an enquiry through your services email as i noticed that a purchased was made on my account and that person was not me, it was made at Kolonnade shopping center. i followed it up and was told to get an affidavit as well as a copy of my ID, which i did. I was told that they will look into it and my account would be blocked until the matter was resolved. Th Truworths at Kolonnade did confirm that the purchase was made manually but could not tell what exactly the item purchased was. I have since received my April statement, my account still blocked and my matter unfortunately still unresolved. The purchase was done on the 13th of February. When i do follow ups in-store i am constantly told the matter is still under investigation, but for how long?