Since 29/11/2024 till now I've been kept on a string waiting for them to claim R500 back for me from a ************ business called Communica who sold me a defective product and refused to give me back the money

Since 29/11/2024 till now I've been kept on a string waiting for them to claim R500 back for me from a ************ business called Communica who sold me a defective product and refused to give me back the money. They still have the product which is rightfully mine.Nearly all my e-mails are never answered and when ONE does all I'm told is that this type of thing takes a long time???