i thought that if the email is changed and password by a hacker how will i get my wallet back, if i contact blockchain they might ask for i.d to get the account back. my info is not real thus making it impossible to get my lost account again
Be clear with your questions.As far as the answer is concerned the previous posts sum's up everything.Now,Do you have access to your wallet ? Do you have access to your email account ? Do you have access to your Mnemonic Phrase ?
How can hacker change your email and password ? Blockchain doesn't ask for any Id's to give account back,if you have the private key,your wallet can be recovered ,otherwise there is nothing they can do.Why don't you read the FAQ section of Blockchain.info ,they have pretty explained everything there.