Steelwedge Software interview questions

one of the most unprofessional hiring process , I have ever seen. The HR will call and inform for the interview tomorrow but won't even send an email or an calendar invite. HR will call and tell you to come to office for a HR round and won't even bother to send a mail to whom to contact, where to come? After 7 rounds of interview they suddenly find my current salary as high and cannot top it, they suddenly realize that am not a manager in my current role and hence cannot proceed. How strange right from the first round they are aware and every interview they asked my roles and responsibilities. After 54 days of interview process, that includes a HR round too, wat is pending is just receiving an offer letter and now when I mail and ask what happened , any update plz? they reply-->they cannot proceed further.