Repaying student loan from abroad -what's the best way?

Hello all. Need some advise. Canadian citizen living abroad and needing an easy way to repay student loans. I have a bank account in the USA and other foreign countries, but not in Canada. Can someone please tell what's the best way to send money to HRSDC to repay student loan without having a Canadian bank? I am currently living in Africa so mailing a check or money order is not an option. Is it easy to open a Canadian non-resident account from abroad? I do not intend to be in Canada anytime soon. Thank you very much.