I'm a locum physician. The clinic I work for emailed the staffing agency that I wasn't meeting my quota which isn't true. Is that libel?

Hi. I am a locum physician that was contracted by a staffing agency to work with a clinic. I've been working with this clinic for almost a year. My contract with the clinic was being renewed every 3-6 months depending on their need. My contract was going to be renewed for another 3 months this year but for some reason I don't understand that was not going to happen. About mid-December 2016, the clinic sent an email to the staffing agency saying that my contract was getting immediately terminated because supposedly I wasn't meeting their expectation that I was only seeing 3-5 patients a day, and that they supposedly repeatedly told me about this. It's not true that I saw 3-5 patients a day. I saw average of 10 patients a day (if not more), which was what I was expected of when I took the job. Is that libel? I want the clinic to explain the wrong information emailed to the agency but nobody wants to talk to me. I want to clear my name. I'm not aware of wrong doing on my part.