Not Returning withheld Amount
First they close the account without any explanation. Than they tell us that they will keep money for 60 working days. And after 60 working days passed they simply don't reply on your communication. 

This is world's leading neo bank. But in reality its same bureaucracy and same lousy attitude to the customer which makes them worse. At least you can walk in real bank and talk to someone. 

They respond on social media, but are shy of replying the emails.

*Answer to your reply*-

I have sent 4 emails the same link you provided here. I answered 4 times your only email I got. All are ignored. Your rep replied on DM on SM. Do note, I started taking follow-up only after 60 working days passed- today is 11th working day after those 60days. There must be something drastically wrong to believe that after you took 1 month to review the account closure, plus 60 working days you need more days to complete the due dilligence.