i got the very same kick in the nuts, its a crusher when you have to wait half a day too!
Got a second glancing blow when i took my licence to have another rating put on but this time was only £100 so i walked away feeling not as sore.
Its not easy to work out their fees either, i had no idea what to pay for my FI rating so sent a cheque for £85 (which is what i think i interpolated from the caa website which coincedentally is the most difficult site to navigate imo.
They dont like to make it easy!