From the way in which the CEO of this company treats he's own employees you can imagine how he will treat he's clients. This company is just toxic, there are other better options that solves the same problem, N26, Monzo etc check them out
The initial tweet: https://twitter.com/phillipcaudell/status/110108122935141580...
The HN discussione about it: https://news.ycombinator.com/item?id=19280131
Note: I don't work for a competitors, but i hate this kind of toxic company cultures since i've been working in similar environments in the past, and this for me is already a strong "ethical" motivator to not use such product.