I want my money back

I have mistakenly made a payment through to SSDA, payment was supposed to be made through to initial homechoice ACC. I have been in contact with SSDA to advice what had happened and I was given email address to send for a refund request. I have emailed everything they asked for on these emails *** and *** last Tuesday dated 21/04/20 I have had no aknowledgement that my refund request has been received nor update. I have sent several emails after requesting for a refund still nothing called through unfortunately I didn't take the name of lady I spoke to I was told they working from home any updates would be done via email I have been requesting for updates via email still have had nothing I nees mg money back total paid 430 referenced under ACC Num *** can I get my money back ASAP please I need to pay the correct ACC