Cost to Cost Merchandising and Instalations Did not get paid for work preformed Mount Pocono Pennsylvania

I was hired by Cost to Cost (MMCI) to preform a store service at aWalmart store in Alvin TX.  I was to instal stickers on Hover vacums.  I was to take photos of all work preformed whic I did.  They came back and told me that I needed a photo of a 4 foot display of dirt devils and the rack I could not buld because of lack of space whic I reported to them.  I Asked them how I am to take a photo of something that dose not exsist, They then told me that if I did not send a photo by this Friday I will not get paid.  again I asked how can i take a photo of something that is not there!