It's possible if you pay someone in fiat through whatever payment service, and have that person then send you the fee amount through Xapo (internal transactions are free), where after that you can purchase whatever service you need. If you think that's doable for you, then look in the currency exchange section to see if someone is able/willing to help you out. If you don't plan to pay for someone to send you coins through Xapo, then you'll be in a very difficult position.