First off, did you do any type of business with this operation?
Second, asking for (via-Certified, Return Reciept) proof of the contract (completed out, including your signature) will show a court (if it should come to that) you're attempting to resolve the issue.
Third, from some past experience, if you at least do the second item, they can stand on their heads all day long...it stops any additional charges they may attempt to intimidate you with...however, since I've never pretended to be a lawyer, but snoockered one, your results may vary if you do anything I write up here, so check the local "free-clinic" of lawyers that may be in your area or drum up a few bucks to pay for one to CYA.
And, if the idiots decide to Small-claims this p!ssing match, be sure to bring your paperwork to court. Don't give them anything, make them pay out of their own pocket to copy anything. Better yet, make sure you don't give them anything other than what helps your side of the argument.
You may need to go into "mediation" - a step that allows both parties to come to some agreement with a court-appointed/approved individual. Be sure the person doing the "mediation" is really neutral. Otherwise....
GL!!
