I have been transferring via WU to my Argentina peso bank account, using the Debit Card with a U$10 charge, as a source. And recently the transfer arrived into Arg bank account on the same day. Last week I decided the test the bank account to bank account method which is free and has a delivery time frame of 0 to 8 days. WU requires you to provide all your source bank account information, userid, passwords et al. In addition you're required to provide proof of identity (copy of driver's license front and back, passport page, a screen shot of your online bank account showing bank logo, your name, account number).
So all ready you're deep into providing a lot of sensitive information. As can be typical of WU they don't provide all the information you need to meet their requirements - Had to call their problem line 1-800-325-6000 to find out what ID documents were required and how to provide them to WU. Turns out they have an unlisted webpage with information on the ID proofs and an upload link which went to a blank page. Another call to their problem line to find out how to send the ID docs. They give you a WU e-mail address: Put your WU tracking number into the subject line and attach copies of the required ID docs. Their operators range from useless to capable and helpful. The good ones make it clear that your transfer will take the full 8 days. This despite the fact that they've all ready debited your transfer amount from your bank account. And the Track your Transfer will continue to show that your transfer is on hold pending ID documents. In addition every transfer like this requires the same process/procedure and sending anew your verifying ID docs.
In brief, paying instead the WU $10 fee to make a transfer via bank debit card to Arg bank peso account delivery is painless and prompt.
Western Union Wheel of Fortune