I have been receiving a lot of scam telephone calls and text messages asking me to call 870-228-9621. The calls and text messages claim there have been suspicious withdrawals from my card, but I called my bank who said they didn't send the messages or made the calls. When you call the same number, an Automated Voice Response system asks you to enter your credit card information. This is how scammers phish or steal their potential victims' credit card information.