Everyone makes mistakes and we learn from them. Revolut is not excluded from this practise. I would first offer them to settle this “dispute” without lawyers (which usually costs money, both sides) by paying you the damage you have had. Sent them a registered letter ( recommandé / Einschreiben ) with what happened and a copy of all documents you have. State clearly but friendly your fair claim and when (specific date / deadline) you expect the damage (eg. hospital or doctors bill) to be paid to you. Also provide your bank account or offer to be paid to your Revolut.
Also I would love to see a prospering and learning Revolut. Not drowned by lawsuits. I think it is also our Swiss mindset that is about primarily searching for a solution that works for all sides.
It is a good first step that feedback was provided here and Revolut removed the false advertising.