Ok first thing you're thinking like someone in the adult industry - to actually find a solution you need to think like a bank. For that you need specialists in processing who can find or who have the connections you need.
My questions are
1) what adult payment company have you contacted about this?
2) what method does your competition use?
3) are you financially stable not just having cash but your holdings that a secondarcy source may offer help
Finally you may want to educate yourself more on how these escort agencies are able to use credit cards ( eg
https://myvegasescort.com/faqs/ )
I am not in a position nor will post it on the board as to how but do your own research
I don't know if this will help
https://www.agencylondonjewels.co.uk...-or-only-cash/