Strangely enough, the only thing the hoax message gets right is the number to call. For the record, mobile telephone numbers have never been in any danger of being made public or released to telemarketers. Additionally, there has never been a deadline to register your cellphone. And you don't need to renew every five years (this was a rule for landlines that was axed in 2007).
In fact, you don't technically need to sign up your cellphone at all. The FTC says that unsolicited telemarketing calls or robocalls to cellphones are illegal anyway. It's still a good idea to sign up, though, in case the rules ever change.
If you get an unsolicited marketing call on your cellphone, first ask the caller how they got your number and then firmly tell them you don't want to be contacted again. If they call back, file a complaint with the FTC at donotcall.gov or 1-888-382-1222. Again, you'll need to provide information about the date and time of the call, the caller's number and so forth so the FTC can track them down.
One benefit of signing your phones up on the Do Not Call list is that you also stand a better chance of spotting a phone scammer when you aren't wading through legitimate calls, too. That's important as phone scams are the largest type of scam in America.
You should always be suspicious of unsolicited callers. Get more details on the various types of phone scams and how you can avoid being tricked.
Telemarketers and scammers aren't the only ones who can bug you non-stop. Learn how to stop harassing calls and texts from exes, former friends, enemies or anyone else.