Oh no! How horrible! I feel so sorry for Nana. She sure didn't need that. Is there anything you can do to protect her now that she's given out her info?
It's bad here in the States as well. I've been getting LOTS of scam phone calls lately.
You might as well expect more of these phone calls. Can you block all phone numbers that aren't in your area code? That's what I ended up doing and I bought a phone that also allows me to block up to 100 individual phone numbers. I've blocked so many phone numbers, I'm going to use up my allotted space for them. But that doesn't solve the problem. When I block one number, they just call from another one.
Most of them are from "Microsoft" calling to tell me my computer is infected with a virus and that I need to give them the IP address of my computer so they can check it. Yesterday, some heavily accented man called from "the Windows Department" about my computer. After I told him that I knew he was a scammer and that Microsoft doesn't call people, he told me again he wasn't from Microsoft but from the Windows Department. What???? LOL. I told him his mother and father would be ashamed of him.
I also got a call from the bogus "Internal Revenue Service" telling me I owed thousands of dollars in back taxes and if I didn't wire money right away, the police would be here in seconds to arrest me. I told him to bring 'em on.
Then a couple of days ago, I got a phone call from myself. I didn't bother to answer, 'cause I wasn't in the mood to talk to myself.
What is wrong with these people?