C&C Small Engines charges for warranty work Anniston, Alabama

I bought a campbell hausfeld (hu350) compressor which kept blowing it's replaceble fuse and would not cycle. The operation manuel says not to return the product to the retailer call 1-800-543-6400.
they gave me C&C small engine as their auth dealer &repair shop  when i took it there they said you cannot use an extion cord with that portable compressor...i showed them in the operation manual that you could.
i chked with them every week for three weeks they said parts are on order...so i called camp/haus again and told the service tech what was going on (crn# 1472885) he called C&C they called me immeditly.
they told me there would be a 39.00 charge , i called Camp/Haus back and they said to have C&C to call their warrenty people
I drove to C&C and they said their was nothing wrong with the compressor that i should not use an ext cord i refused to pay and they refused to call warranty so they still have my new compressor
 I am filing theft by conversion charges aginst C&C