Recruiter-Rater

Don't know if people have been in such a situation. This recruiting agency arranged for an interview with company A which I attended and shortly after (next day) was informed that they were interested in hiring me for a 3 month contract to hire position. The rates were discussed and I also signed the paperwork. Later this recruiting agency informs me that they were not sure of the start date due to some internal organizational changes in the HR dept of Company A (which had been bought over by Company B a few months earlier).