Called me hours after sending in application and sent multiple emails, I think they give interviews to everyone that applies, they didnt seem to have a real office, just a small room with a desk inside a larger building, not sure how legitimate the company is

Interview process was easy... nothing unusual or complicated. They invited me in for a second interview same day as my first, and invited me for my third the next day where they offered me the job. I went to the office to get the papers signed, then they told me I had to finish a background check first. Easy, right? They told me it was a standard process and everything would be done soon. Background check was done and they told me everything was fine. I kept calling to get an update and see when I can come in to get the papers signed and get started. Not only were they not answering my calls or emails, HR was literally dodging ALL my calls, for WEEKS. They are extremely unprofessional, even if they decided not to hire me after all, least they can do is inform me. I turned down another job to work with them, and they left me hanging for three weeks. I had to call them from a different number to put them on the spot so they could finally answer me. Would never want to work in such an inexperienced environment.