Auto Entrepreneur. I registered in April and was due to pay my first trimestre by 31 October, then they sent the second as well for the same date which is okay, but that both papers had the wrong siret number on them! I visited my local office and she didn't understand it at all. Yesterday I finally managed to get through to the area office and he didn't either. Eventually he said he'd remove the 'new' number from my dossier, but that I was late paying so would incur a fine.
I explained that I'd registered online but that I was told I'd nothing to pay, he replied that it was because I'd used my real number instead of the 'new' number! And sighed.
As did I.