i am sure experts would be able to guide you in some time, i just wanted to put in my 2 cents
1) i think the GMAT score of 710 is competitive and not STRONG considering all the schools you applied to are in the top slot. Also,Maybe a more balanced score on Q and V would have been stronger
Being an Indian is both a Boon and a Bane. Too many strong candidates of Indian Origin are bombarding the Adcoms. I am sure that 710 would have been good enough had you been from some other country and not a High GMAT median score country like India or China.
3) Most importantly, i think you did something wrong with your essays and how you presented yourself in them, i think there must be some RED Flag. I think hiring an Admission Consultant might do the trick