InterVenture Software Developer interview questions

The interview itself was pretty standard one (HR inteview, tehcnical interview, technical assignment). The problem was that I was rejected with very suspicious feedback. Luckily, I have a close friend working there who digged little bit up about my application, and we relaized that they have mixed up stuff and looked at someone else's assignement as if it was mine, and I got rejected based on that. Very unprofessional.