Autism East Midlands interview questions

Hiring and interview processes were good, efficient interview style. Had to complete a pre-assessment task and give a presentation. However, I am deeply disappointed with the process following the interview. I was offered the job approximately 30min after the interview and asked if I could take some time before accepting, which they said absolutely will you let us know tomorrow and I said I would. I then emailed at approximately 6:30pm the following day (as soon as I’d finished work) to accept the offer (within 24 hours). I was met with an email stating that I had taken too long and they had offered the position to someone else. A deadline for this offer was not communicated to me nor was I contacted regarding my decision prior to the ‘deadline’. Lack of communication and poor practice.