The IRS is coming after me...

I received a letter from my non-US bank telling me that they have been contacted by the IRS under the US Foreign Account Tax Compliance Act (FATCA) and that I need to provide more information or they will report me to the IRS under this Act.

Wikipedia gives details as follows: https://en.wikipedia.org/wiki/Foreign_Account_Tax_Compliance_Act

I'm not American and have never been to the USA.

I reckon this can only have come from one of my exchanges reporting my details to the IRS - what are your thoughts on this?