Ripping customer off & keeping monies with non-deliveries

Worst customer service ever. I ordered and paid upfront for 3 dresses &1 shirt between 22 Feb & 26 March 2020. I understand they couldn't deliver due to lockdown. They promised delivery in level 3, till today, no delivery. Sad part is they ignore all emails, whatzapp, sms's & telephone calls. I have asked a million times now, no response. Can they atleast refund if they can't deliver.