Well I've been hearing footsteps I can't sleep and I hear voices and my big brother said someone was pushing him down on the bed I don't know what to do and my dad doesent believe us

Hide a videocam and get some video footage or get a religious person who believes in these things to visit your house.

How old are you and your brother? Is this a new house for you or have this experiences just started of the blue?

My house is huanted to my cousins sisters door opens all the time stuff starts at 3:00 in the morning also we hear foot steps too and knocking

Also set up your camera