I needed to amend my 2013 tax return so I went to H&R Block, my first mistake. A few weeks later I went back to the H&R block office to pick up my amended return and other supporting documents. It seems like all my information is present and correct but I haven't verified this. However, I noticed a 1099 form that looked unfamiliar. Upon closer inspection, it was the 1099 of a different H&R Block customer that included the person's name, address, social security number, and other tax related info. I looked up the person's full name on Facebook and based on the info in his profile I'm 99% certain I found the right guy. So far I have escalated the issue with H&R Block but it will take 7-10 business days for them to email me back. I can't go back to the physical location since it's closed for over a week. I'm keeping the form safe in my apartment for now. I live in San Francisco, CA.
Since I'm now in possession of this person's personal info do I have to take any special action to avoid any legal trouble?
Does this person have grounds to sue H&R Block since they compromised his info?
Is reaching out to this guy on Facebook so we can talk in-person the right thing to do? If he wants to sue H&R Block I want to help him do that. I could ask him for his address to verify that it's actually him.
Should I shred this person's 1099 form immediately or hold on to it incase he wants to sue H&R Block?
Do I have grounds to sue H&R Block? For all I know our info was swapped and this guy now has my 1099 form.
Am I legally allowed to take photographs of this person's 1099 form as proof that H&R Block put it in my possession?