I'm late to the game...but after reading the whole story I don't think you should jump to conclusions.
1. Why didn't your "agency" require the tenants use automatic bank transfers?
2. What, exactly, are you paying the "agency" for...if they're not managing these things for you?
3. If you have insurance to cover any default, then you don't really have to "worry" about losing monies.
4. There is a possibility they're telling the truth, but aren't very savvy in coordinating their funds electronically.
5. See #2
Asking to shave rent off before a contract is signed can mean they were trying to follow 'advice' that rents can be negotiated. That's not an automatic black mark against them (who wouldn't want to save money every month?)
Given how common and rampant ID theft has become (even for Dread), or that electronic bank transfers between countries can have a weird lag.....it's not unreasonable or exceptional that they may have been victims of some type of criminal fraud, or transactions getting mixed up in the ether. Her letter didn't sound like the typical scammer or deadbeat trying to string you along....
Young couple with a young child...fully "vetted" by your rental agency. You can still keep up your mortgage payments even if they're late, or default (due to insurance). I say give the young family a break and wait a while. In the interim, demand your "agency" do a better job in exchange for their fees, or you'll terminate THEIR services.
