We had an interview scheduled at the start of February which you cancelled with 30 minutes notice stating you had filled the position. Since then, the position

We had an interview scheduled at the start of February which you cancelled with 30 minutes notice stating you had filled the position. Since then, the position has been posted online and to HackerNews hiring threads. Perhaps there has been a communication mix up here? (also, when I tried to sign up to your service it was impossible to actually log in)