@Just-Lisa-Now-  I have told this story here, before.  About a dozen years ago I had a client who married in September.  His wife had two kids.  She went to an H&R Block office as she always did, brought along her husband, told them when they were married.  They prepared an HoH return, as they had in past years.  When she and her husband came to my office to prepare his return, they told me this story.  I couldn't believe it; came close to accusing them of lying.  I told them to go back to the Block office and get something in writing from them confirming that she could still file HoH, knowing that they wouldn't do it.  

A week later, they brought me the memo from Block asserting that it had been done correctly.