I've completed my BBA 4m Distance learning with 68%. Is there any chances to get a call from top colleges if i'll get 90+ % in CAT,XAT?

Yes Sunil you will get the call from good college. Here distance education is not matter every college test your skill and knowledge and your performance in GD/PI. Every college want minimum qualification graduation in any discipline and admission are done on the basis of entrance exam like CAT/MAT

First of all you have done a BBA which is now days one of Dumb And 3rd Class Course Available in the market and also you have done this course from Distance learning. don't ever think to get call from any top management colleges. getting more than 90 % in CAT is not as easy as u think your Aptitude

The eligibility criteria for CAT and XAT itself mentions that a candidate must be a full-time graduate in any discipline. Distance education courses are not entertained.