Thank you it was a relief. You're right they will contact you by mail if you have any problems with them. That's what people need to keep in mind. They do have that email scam as well. The IRS website has a section on the scams and they posted an email where people can forward any emails they supposedly get from them which they make clear they do not send anyone. They contact you by mail but you can forward the emails to them and report phony numbers which I did with the numbers they left in my voicemails.