HELP NEEDED PLEASE:)?

You really need to take things people say with a pinch of salt maybe their opinions are a bit one sided but there is often no smoke without fire. As for contacting your dad i think the best course of action is to get the people who know him to approach him about you wanting to communicate to test the water. Then a letter or phone call is a good start but i would recommend if you are going to meet face to face to have someone there you trust and older like a family member you think could be there for you without intimidating your dad! You have a right to contact your dad but there is a chance it may be difficult to see you for whatever reason.