I want my deposit!

I Moved out of Glencairn Building at the end of January 2020, but till to date, I have not received my deposit. I've tried to contact Christina Molongoa who is the Portfolio Administrator, and the last email she sent was this on the 18th May 2020 : " Hi Kleinbooi

Please note that the deposit was sent to your workflow on the 7th April with ref number 7392, please action. "

Who do I contact further with this matter