Tapad interview questions

Started nice but ended unprofessionally I had a call with a recruiter about the company, the position and the process. We also talked about my career and my interests. I was informed there would be a live programming interview on video conference. The live coding part was fairly standard, I solved it and then we had a small conversation about the interviewers' role and the projects. I was told that next would be a take home assignment. It was again a fairly standard assignment building a rest api for high scale. I was told only the main coding part matters. I did a fully working micro-service tested with high throughput along with multiple persistence for both scale and durability. There was supposed to be a review of the assignment with an engineer from Tapad. However, I didn't hear from them for about 2 weeks and after which I got a canned response about how there were other candidates they chose to proceed with. It is a bit frustrating that I wasted my time on a take home assignment and they didn't even bother having a short call to discuss it, even if they found another candidate (probably cheaper) for their need.