Why was I directed to counter J2 instead of K1 for my 30-day tourist visa extension at Changwattana immigration?

These are the sections I deal with often and what they do;

A - 90 day report, address change, TM.30

C-1 - issuing 90 day visas in country

C-2 - re-entry permits

J - tourist visa extensions, residence certificates

K - visa exempt extensions

L - extensions based on marriage, retirement & raising kids

M - extensions based on employment (except teachers)

N-1 - extensions for teachers

N-2 - ED visa extensions