I booked an Intercape mainliner bus online for my mother when we arrived we were were found big sky bus we were told it's the same thing but to my knowledge it is not because I have been on these two busses before n it is not the first time they do this

I booked an Intercape mainliner bus online for my mother when we arrived we were were found big sky bus we were told it's the same thing but to my knowledge it is not because I have been on these two busses before n it is not the first time they do this. No email to inform me or give me an alternative