Solera Technical Support Representative interview questions

I applied through a re recruit agency. The process started with a phone interview, on site assessment test with recruiter, phone interview with my potential manager, and finally a face to face interview with my potential manager and another employee. I was asked about my resume, career goals, and basic behavioral questions. My experience was good up until I received an offer. The recruiting agency said that Auda Explore would like to extend an offer and would get the official letter to me after they finish it. My start date was nearing and I still received no offer letter and a week before I started the recruiter I worked with said that they pushed back the start date and don't know when they have pushed it to. Here I am two plus weeks after the day I was supposed to start and still no news on when the new start date is. I did see that Auda Explore put up another ad with another recruiting agency for the same position that has no start date.