cleaning wax from wool
As a hat restorer/renovator, I've removed candle wax from fur felt hats by applying steam heat to liquify the wax & then blotting off the wax with a clean cotton cloth. Keep reheating the wax & blotting. Don't rub the wax.
Granted my method was used on fur felt not wool fabric, but the applicable physics of the wax removal remains viable.
You may also need to have your trousers dry cleaned after removing the wax.
Edwin Carl Erwin
"Danny, let us seek safety in battle."
from John Huston's film of Rudyard Kipling's story The Man Who Would Be King.