TEKsystems .Net Developer (Contractor) interview questions

I interviewed with two different recruiters with 3 different opportunities. I went through the recruiter interview process and was supposedly submitted to all 3 opportunities, but I heard nothing back. I did a lot of prep work to prepare custom experience letters for the three roles and then spoke on the call with the recruiters, who were polite and said they would submit me for the roles. I don't understand the lack of communication follow-up.