I have been trying for the past week to make my first deposit at ACR via mastercard but unfortunately it has been denied by the banks they deal with every time. I have phoned my bank and it is not on my end. All of this was AFTER getting verified through email process of sending documents and what not. In conclusion after speaking with reps I have just decided to finally get my feet wet with bitcoin since they seem to be pushing it so hard everywhere.
Most of the Credit Cards won't let you spend thier credit internationally. One bank I found that lets you do it is USBANK. You get on through usbank.com.