BBA vs. Economics (Please help)

Hi people! I would like to get to know your opinions, and I also seek a help. I am currently the 1st year student studying BBA (business administration). Thanks to the different forums, I started to think that my major is non-relevant, useless major. In my school (I am from the developing country where I currently study), they offer 2 programs in their business school. One is BBA, the other one is Economics. I sometimes think that courses like Organizational Behavior/Communications doesn't have any weight. Instead, I can learn some advanced math in Econ. Also, I don't know why but started to think that Econ is more suitable for finance & Big 4 roles/internships. My general career path which I intend to pursue is: Undergrad + 2 Big 4 internships + FMCG/Oil&Gas finance internships + MBB + MBA. I found this forum very useful and I sincerely hope that people here will help me. I want to know whether BBA is a right choice? P.s.= Also, will BBA background enable me to get the internships and final management consulting offer which I want? Thank You a lot!