Today random two women who were looking like salesperson asked me that there phone ran out of recharge and they need to call on urgent basis, so to help them I allow them to call from my phone but the no. that woman typed was a toll free number and I suddenly got a vibe that this is spam as soon as they dialled the no. an alert came up with some info and she started reading it like she was learning the whole msg then I immediately took my phone and went away from there, I hope it will not cause some serious problem.