Crawl Space Brothers interview questions

Decent Interview process, spoke with the main web developer at the company. He was super nice during the interview. Received a job offer the Monday after the interview. Verbally accepted the position and asked to have to Friday to look over and sign the paperwork. They said this was fine. Thursday i received an email confirming I got the paperwork I responded 9 minutes later saying yes and id have it back to them the next day. the next day rolled around now Friday and I receive an email mid day saying that due to my lack of communication they were rescinding the job offer. All in all do not work for this company they wont care about you. I am now out of a job as I am currently training my replacement after already having put in my two weeks notice.