If you are actually productive with your method, then I would advice you to be happy that you dodged a bullet, and it only cost you 3 weeks. Go for another company, and don't chase this one.
If, however, they have a point, try to learn some productivity tools to be more efficient before going for the job.
In any case, don't think too much about this company, it will just distract you.
If, however, they have a point, try to learn some productivity tools to be more efficient before going for the job.
In any case, don't think too much about this company, it will just distract you.