“When a government is dependent upon bankers for money, they and not the leaders of the government control the situation, since the hand that gives is above the hand that takes. Money has no motherland; financiers are without patriotism and without decency; their sole object is gain.”
— Napoleon Bonaparte
WU and other remittance companies are essentially private bankers, and as such they are just as much bottom-feeders as any other type of bankers. They are the spiritual descendants of those money-changers whom Jesus scourged from the temple. Of course they are taking advantage of the situation. It's what they do.
I am getting ripped-off the same as you are. I feel your pain. But I'm afraid this is another of those situations in which all we can do is shrug and suffer through it. Because Argentina.