This could be a genuine invoice. If the OP took the French phone back to the US and didn't turn of data roaming then it will have been downloading information 'abroad' for however long the OP has been away according to Orange.
There have been a few cases of this in the UK, most notably someone downloading an episode of Eastenders whilst on holiday in Spain. The companies usually see this is an error (albeit a rather schoolboy, basic mistake to make) and revise the bill accordingly.
Good luck getting the refund - they may do it once but certainly not twice - make sure you are hot on your data roaming in future.
Apologies if I'm wide of the mark, it just seems the most likely scenario.
Jono
There have been a few cases of this in the UK, most notably someone downloading an episode of Eastenders whilst on holiday in Spain. The companies usually see this is an error (albeit a rather schoolboy, basic mistake to make) and revise the bill accordingly.
Good luck getting the refund - they may do it once but certainly not twice - make sure you are hot on your data roaming in future.
Apologies if I'm wide of the mark, it just seems the most likely scenario.
Jono