The worst online banking
Very bad support, misinformation on their app and never protect customer rights. 

1. I got charged from the ATM without any information and N26 showed me this ATM on their app. When I asked them to investigate on it they said sorry we can not do something. We can just check our app. Sorry but if you show me that I have free withdrawals and show me some list of ATMs and then I got charged more you have to at least investigate on it and give me detailed information instead of saying sorry. 

2. Once I bought a flight ticket and in the last step when they asked me to approve the payment through 3D security I just declined because I found others. I cancelled it but it got charged. When I asked to investigate that they said they can not. If you can not protect my account with 3D security why you have it? If you give permission to the other system to charge me even if I decline it?

3. Every time when I write something to them I disconnect automatically and connect the new person and they ask to explain everything again and again. They always try to prove that the problem is on my connection which I tried mobile, wi-fi and ethernet. And this problem occurred in all of them.