Wings N' Things interview questions

Great first interview and was basically offered the job to not hear anything back. I followed up and was asked to go to different location for another interview. Followed up again, was asked to go to 3rd meeting. Manager had me fill out hiring papers and asked me to come back 4th time to only tell me the offer was pulled from me and they made a mistake. This should never happen and was unacceptable and quite frustrating. Management then treated it like it was no big deal when they should have at least rectified it professionally by at minimal offer me less hours offer me a job at a later start date when they have space but this was embarrassing, insulting and management took very little responsibility. 4 trips and no job. This should never happen.