Front Street FS Doesn't Pay and Sends You to Wrong Addresses Bohemia New York

I own a small renovation company/HardwayToGo Reno's and I have done work for Front Street FS for Justine J and Erica R with Front Street at two of their property locations - Claire's and Eddie Bauer stores in Edmonton, Alberta.  Having worked at two Claire's stores - I haven't been paid.  Quote unquote "we are looking into it".  I was given a call to go to Eddie Bauers in Edmonton to adjust fitting room doors (wouldn't close) and three missing wall mount door stoppers.  Having gone to the one store that had the quoted issues - Front Street informed me that I went to the wrong store.  How can two stores (separate locations) have the exact same problem?  I called Front Street and talked to Justine and was told that I didn't work at the authorized store, "we are not paying you".  I plead with all small companies DO NOT WORK for FRONT STREET!!!