Verizon Intern interview questions

Spoke to someone at a job fair and was emailed information about a video interview. Video interview was not live, and you were able to rerecord answers to questions as many times as you liked. Questions were mostly about teamwork, and what you would do in certain situations. After video interview, I was invited to the location near Tampa for a tour and final interview. The questions were exactly the same from the video interview. The tour was very fun and interesting. Didn't get an offer in the end. Throughout the process I was a little disappoint in Verizon's last-minute preparation for flights and for the video interview.

I applied online. They called me on site to New Jersey head quarters. Later took another round of online interview. After waiting for almost a month they offered me the job. I accepted the offer and spent many days doing paperwork and taking drug screening tests. I also received offers from other reputed companies but declined them as I thought I was going to Verizon. Last week they called me and said due to some business requirements they are rescinding my offer. I told them that I declined my other offers and informing this at this point is not fair. They said there is nothing in their hands. That is so unprofessional.