Credit card payment failures over VPN

I seriously appreciate how the members have come forward with both replies and good humor. I need such a measure of privacy because I do not have a registered agent account for Australian Immigration, as that requires a registered Australian business ID. I create and use an individual account for the individual I'm applying for. They provide me with their CC for payment, and I apply on their behalf. For my own sake of privacy and to prevent registration of my IP across numerous applications, thus creating a possible false security red flag in Australian immigration security systems, I want to take such preventive measures beforehand, and for such sake of safety, I'm trying to find a way that allows me to switch the IP to any location other than mine.

Rent an Australian VPS, run tailscale and use it as an exit node.