SnackNation Lead Front End Engineer interview questions

Was contacted by the recruiter in SnackNation. By the time the recruiter made a phone to get more info about my work experience, I already accepted an offer from another place and notified him on the phone. However, he insisted for me to still continue the interview process. So out of respect, I went along with it and did a coding assignment at home. Did everything they asked me and turned it in the same day that they assigned it to me. I never heard back from them afterwards. If I wasn't interested in the first place, please don't waste both of our times going through the process. Apparently, my time was wasted and not theirs.