recorded message wanting to reduce my credit card interest

This number called my mobile phone, left no message. When I tried to call back, I got the message that it was a "non-working number." How is that possible?

The call was from the drug-addicted "card services" scammers who call us, pretending to be associated with our credit card companies, in an effort to fool us into giving them our credit card numbers so they can rip us off. These lowlifes use all spoofed (false) numbers to hide their true identities and locations to avoid prosecution. Most of the phoney numbers they use do not actually exist--that's the reason they cannot be called back--there would be no reason to call them back anyway as they WILL NOT remove your number from their calling list, and will most likely make obscene comments if you ask them to. Simply don't answer the phone if it is not a number you're familiar with, as these scummy creatures use hundreds of different phoney numbers in their attempts to cheat us. Also let others know of these scammers before they are cheated!

We have nothing to fear of these drugged-up creatures, unless they fool us into giving them our credit card numbers, and if that happens they'll rip us off. Other than that, they're pretty much a pathetic bunch of lowlifes.