Hello, 

IIMs are institutes that conduct post graduate diploma programmes in Management and Management programs for the executives. They do not conduct undergraduate level programmes of Management like BBA. 

Moreover, these institutes Do not conduct interactions via WhatsApp. 

There are certain administrative numbers that you can check from their website. However, it's important to know that they don't have any BBA  programme. 

Good colleges in India for BBA are:

*University of Delhi

*Guru Gobind Singh Indraprasth University, Delhi

*University of Mumbai 

*Symbiosis International University, Pune

*NMIMS University, Mumbai

*Bharati Vidyapeeth deemed University, Pune

*Christ University, Bangalore 

*Gitam University, Vishakhapatnam 

Wish you all the best!!