As Arg pointed out, Call back gets, "We're sorry, you have reached a number that has been disconnected or is no longer in service." That means it's SPOOFED. That means SCAM. Block it.
Not a legitimate caller. They will never reach me by phone. My phone numbers are on the DO NOT CALL list, and I mean it: if I don't know them personally, don't call. Since they don't respect the DNC list, I put them on my personal "DNA List" (DO NOT ANSWER list). I don't know who they are, nor do I care. This category of phone-caller tries to get you to empty your bank account into theirs. Don't fall for it. Never give out personal info over the phone, including surveys. Surveys sell whatever info you tell them.
My curse for this lot, extended family, and friends is that they suffer prolonged, painful, debilitating, bankrupting, hideous, never-healing gangrene, deformities, and death. Go to hell.
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