How can un lock my phone samsung adroid phone gt5300

my Samsung phone is asking me my username(e-mail) and pass word to un lock my screen or give me my pattern to draw after some one drew it wrong for more than 5 times and I do not have the user account though I have got an account I have been receiving e-mails from the same phone .iam putting in the same e-mail and the same pass word and it tells me that they don't match .what can I do with it.

Hi you can easily unlock your samsung android phone by using unlock code. If you need unlock code you can visit this site Simpleunlocking.com here you can get the code and unlock your mobile.

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You could try this LockWiper (Android) tool on your computer. It allows you to remove the screen lock from most Samsung devices without losing data.
https://www.imyfone.com/remove-phone-lock/