Hi. Unfortunately I had a tax lien filed against me even though I was on an installment agreement. Long story about IRS fibs. I don't even own any real estate. Anyway, since it hit my credit report I've gotten about 10 notices from these tax relief companies. I don't know how many, if any, are legit. I google the number and/or the name and nothing comes up so I'm suspicious. They send me these notices and right on the envelope in plain view it says tax lien filed, personal and confidential (yea right) or back tax notice or about your tax lien. Some even had a tax lien number.