I confess I am not sure - and I sympathise with the (lack of) language skills and telephone calls, I dread having to try the 'phone in French.
I can only suggest that you either visit or send a cheque to your local trésor with a detailed covering letter (and by recorded delivery) or see if you can round up someone with good language skills to phone them on your behalf.
Perhaps the more experienced denizens of SF have some further suggestions.