It is a curse. The enemy has your birth date, but is guessing at the year. Sometimes this happens when they get the date off of Facebokok or other social media because you fill out the date but not the year.
This is a typical wife's or sweetheart's revenge spell against a woman she wants gone, due to the two names. If there was only your name, we would look upon it simply as a personal attack for which the motive is not yet known.
Are you having an affair with a married or engaged man or are you clinging to an ex-lover who now has a new woman? (No offense, just asking.)
If you are, the other woman wants you gone.
If you are not, it may be that another woman of the same or similar name is having an affair with a man and you were mistakenly identified as the interloper. Alternatively, the man may be having an affair with someone in your neighborhood and his car was parked in front of your house and the wife thought you were the one he was seeing, got your name from neighbors, from the mailbox, or online, and then located your birth date via social media.
Have you done google and Facebook searches on the other name?
In any case, you should cleanse your front door with Van Van oil in water or with Chinese Wash in water and bathe in a dilute solution of same, while reciting the 37th Psalm ("Fret not thyself because of evildoers...")