Which Name and Birth Date is Right?

Question:
Sir my name is [name removed] but actually my name was when I born it was [name removed] but when I enterd in school my name was changed to [name removed]. Sir, my problem is my original DOB is [date removed] but my father written [date removed] while he is entering my name in school. And I am always everywhere using the [date removed]. Is it right for my life or career? Sir, pls answer fast. And sorry about bad English because I am learning English. Thank you.

Answer: (Responses to questions rely on the accuracy of the name and birth date provided with the question. Typographical errors or incomplete information can result in an incorrect response.)