I'm sorry for casting aspersions or for any negative implications. But I saw this question elsewhere and I couldn't find an answer :

How many people in the project team have access to this accountant?

If it's more than one, can the other person(s) verify what Oru has said?

This accountant should have known the tax implications. And they should have had professional insurance to cover a mistake like this. That's what they are paid for.