What are the main benefits of money transfers by MoneyGram? Availability - MoneyGram payment system services are available everywhere, in more than 186 thousand locations in 190 countries. Money transfers can be claimed within 45 days, but if for some reason, this period is exceeded, the processing operator would need additional time to call the main office of the company of MoneyGram for voice authorization. If you need to cancel or change a transaction, then you should contact by telephone with the MoneyGram branch agent, made the transaction for you. MoneyGram point-of-sale systems are continually upgraded to provide the latest new products and functionality.