they called me saying that i need to call them regarding my bank account. they asked me for my pin number and bank account number>>>

Same text here. I also get the phone number 734-217-4671 or 877-275-1344. Always about some credit union account that is closed, deactivated, has suspicious activity, or some other nonsense.

I keep putting these numbers in the National Do Not Call Registry complaint line at https://www.donotcall.gov/default.aspx. I'll also start forwarding all pertinent information to the FBI's Federal Taks Force of Internet Fraud (www.fbi.gov/majcases/fraud/internetschemes.htm)and to my local State House Consumer Protection bureau.

I never call the number - it is an obvious scam.