Root help with root

m new to this forum.
i hd rooted my micromax a57 ninja 3 using application poot.apk
it worked well for 1 day and unfortunately i deleted sm of files which were useful for rooting nd now i hv no superuser access on it. m even unable to root my phone again and the internal memory of device is shown full even if i hv mt installed any app. wht to do nw. i cnt even root or factory reset my phone..i tried all rooting apps like universal androot and z4root etc.

pls pls help me out.
m vry confused n sad.