Western Union. If you are in USA, UK, Australia, Candan or France some European countries. you can pay online, and western union support credit/debit card. For other countries, if it doesn't support to transfer online, you can find a nearest WU location to send money. Western union online payment link https://www.westernunion.com/us/en/send-money/start.html
MoneyGram. You can find a MoneyGram location or pay online as well. online payment link https://secure.moneygram.co.uk/locations
International Wire Transfer. Transfer online or go to the bank also fine. In this payment way, It usually will take about 1-3 days to reach our account, so if you are urgent to receive your diploma, this payment way is not a good option.