It sounds like you connected your profile to the wrong parents. To fix:
1. Make a note of the WikiTree ID (Surname-####) of each of your correct parents.
2. On your profile, click the Edit tab.
3. On the right hand side, click the link under your (grand?)father's name that says "remove/replace father."
4. Enter your correct father's WikiTree ID in the first box.
5. Scroll to the bottom of the screen and click the button to Save or Replace father, or whatever it says.
6. Repeat steps 3 - 5 for your mother, if necessary.