Bank card for a freelancer

Hello everybody! I left my company about 6 months ago and 've been freelancing for about 3 months but have already got several clients all over the world. Now I’m thinking how to get payments easier and faster. What international bank cards could you recommend? The issue is that my bank (Russian) processes all the payments for such a long time that it drives me nuts. It is totally ok for local transactions but not for international…