Caller: Someone pretending to be from our water provider

I was called by someone with an indian accent who said they were from our water provider, and were talking about a 50% discount on our water bill. I though they were just informing me about it. They already knew my name and number, and then started asking about a PIN...I thought that sounded fishy and after questioning them and receiving no clear answers I hung up.

From a bit of research it seems this is a common scam that attempts to steal bank account information.