Saturday call from social security Manila

Got a call today Saturday morning from social security Manila. They interviewed me about changing my bank account number for my son benefits. Everything went okay but after hanging up I worry was it real or a scam so I put a lock on my account to make sure. In my prior email from them they asked to call them and I replied requesting them to call me. Does it sounds legitimate to get a call Saturday morning and the number was in Washington number and I thought maybe rerouted from Manila but when I checked there was no listing. I gave them my old account number and current account. Any suggestions what I should do at this point. The interviewer had all the information including my wife's maiden name and ask to talk with her to verify because it's a guardian account after hanging up I received email from them stating they will reinstate my son's account