My Stepfather revocated the gift registration he has given me

I am 21 years old now.As my father have died when i was 5 years old my mother got married to a next man who is my stepfather rgt now 10 years ago. After the marriage my stepfather have cruelly beaten up my mother everyday and with in two moths of marriage he threatned my mother to give an amount of housing land into his name as a sale deed. After all these years my mothers mother have come to know about it and have requested my stepfather to return back the property by taking the money she offered which is huge some of money she got by selling her own land. But she dont have any proof of it given to him. We completely belived our stepfather as the time has come we have requested him to give us back the property to me because to apply my education loan. My stepfather have gift registered me the property in MARCH 2017 with all the rights on it. and without any ones knoweledge he had it CANCELLED in a far away sub registrar office in MAY. I have applied of an EC in Eseva and got shocked that he did it. The EC came out in his name stating revocation of gift settelment between mr x who is my stepfather and me. To be honest its my only accet for to continue my education and now this happening. IS IT LEGAL TO CANCEL IT THIS WAY ?.