Approved for loan mortgage rates?!

Hi I'm 22 and thought about buying a house but it wouldn't be any time soon, I just went on lending tree.com and put all my information in cause I just wanted to see what my mortgage rates could be if I decided to buy a house. I don't plan on buying a house anytime soon I just wanted to see the rates. They sent me an email and called me (I didn't answer) saying that I am approved for the loan?! I just wanted to see what the rates would be, I didn't want to get approved, what does this mean? What do I do? Can I just ignore the calls and emails or will they keep calling? I'm kind of nervous about this.

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