Flyt Software Developer interview questions

Was working at the time abroad, so initial interviews were over the phone/Skype, and travelled to London for the final interview. There was a coding test, followed by an interview with 2 employees

I applied online a month ago, and had a 1 hour interview on the phone with one of their developers, and then I was sent a technical test to do. I did the test and sent it back, and I got an email saying I passed the test, and I would get a call the next day to continue the interview process. Unfortunately after many weeks they never contacted me again. I have sent them 2 emails politely asking them to get in touch but I have been completely ignored. I would understand if I didn't pass the interview or they didn't like my profile for any reason, but after spending time and effort to do their tests and be told I did very well, getting no contact at all is a bit frustrating. It's a shame because I was really looking forward to their call.