I received 2 separate notices from the IRS. The first is a CP75 notice. An audit asking me to provide documents. This was dated 2/26/18. Then I received a notice CP49, an offset letter stating they took what I owed from last year and stating I do have a refund coming. This was dated 3/5/18. I'm confused about what I need to do next. Am I getting my refund or do I need to still provide documents to them?