MuleSoft interview questions

Very unprofessional. I was approached via email by a senior hr person in the Mulesoft HR team who asked me if I had time to have an initial conversation the next day. I got back with times and said I would be happy to workaround my schedule to speak at times outside if the ones I had suggested. The HR person didn't get back. I followed up for two days , and even called her receiving a curt I'm busy I will email you and she hasn't bothered to reply for over a week. I appreciate being busy but if you reach out to a candidate and specifically ask for times to speak with them as they are a fit for the role your are hiring this is very unprofessional. I was surprised as I thought mulesoft won awards for being a great place to work! Maybe they are too good to need anyone ever. I often feel like once companies reach a certain level they think they can treat potential candidates however they feel like and no one will say anything. It's a shame really.