Lost order enquiry

I ordered 6 customised soccer/football jerseys off www.jjsport01.com at the end of 2023. It was officially flagged as ‘lost’ once it arrived in Australia. Therefore, I received nothing and all they did was take the money. Has this happened to anyone? The question is: is there any options for recouping funds or jjsport resending the order? Are they usually flexible or helpful when orders are lost considering I have all the Australia Post official emails and correspondences?

Any advice would be very welcome.