Wild & Wolf interview questions

The interview was easy and casual conversation. If they like you they have you take an excel skills test. Interview on a Wednesday. Got an offer at 330pm on Friday. When I received the offer I asked 2 questions: 1. If I could have a couple of days (over the weekend) to think about it, 2. If salary was negotiable. Her response was "Based on your response we are going to withdraw our offer". Very unprofessional!!!! They could have just said no salary is not negotiable. I considered this a dodged bullet as I do not want to work for a company that will withdraw something from you just because you raised a question. Bottom line they lost a smart and hardworking employee!