My outgoing flight from JNB to LHR was booked in R. However I had decided to use the incoming flight upgrade to First. Now upon checking I am booked in I for the return.

Kind of bummed about that is there anything I can do? its not a train smash but F is nice!

Secondly, why does the BA website not tell you which class you are booking into? This drives me crazy I wish I could just pick the letters and have it price that way so I avoid this mess or am I missing something here too