I'm just gonna link a few German articles. They seem to have reestablished their phone hotline by now, but I don't think they have changed their "move fast and break things" attitute.
[1] https://www.anwalt.de/rechtstipps/erneute-probleme-bei-n26-b...
[2] https://www.businessinsider.de/wirtschaft/einem-n26-kunden-w...
[3] https://www.businessinsider.de/gruenderszene/business/n26-er...