GoGas implodes - non delivery of gas after payment made

Go gas appears to have literally imploded. I have ordered gas from them via their online portal 7 times in the last 5 months and their service has been really great. I swapped out a couple of my old gas steel bottles for their composite material which are transparent and allow you to see the gas level... At a cost of course. But my recent order now, placed on and paid for a 14kg gas refill on 28 September (order no 580DE7) appears to be the very last one I will be placing with them. Order is till undelivered 5 days later and their business account on Whatsand phone line and email are all not responding to queries regarding the status of delivery. I have lost this payment... Very sad. Please kindly refund my payment.