That sounds really strange... Was that really the info you got from the EBG hot line? Have you tried the Facebook team?
The earning chart looks like this:
Earn points chart
All other classes are excluded.
* Low business class.
First/Business:
F, A, C, D, J, P
Min. 1200 (200%)
Economy:
Z*, Y, B, M, E, U, H, Q, V, W
Min. 600 (100%)
Low Economy
S, T, L, K, G, N
Min. 150 (25%)