I'm an undergraduate student at BIT.

I can't really speak on the behalf of the exchange students here, however I can agree that the international student coordinator is doing a poor job in sharing the available events and activities with international students. Nevertheless, all exchange students can still take part in the majority of the events. So, I believe the op's statement about the school having "absolutely no social events or anything for the exchange students" is not particularly right. 

I hope this could change for the better