I.C. System, Inc. Debt Collection Complaint

I.C. System, Inc. Debt collection department,

Other (i.e. phone, health club, etc.) Cont'd attempts collect debt not owed Debt is not mine Indiana

We continue to receive calls from a 2010 alleged debt from - for -. We received a refund check from direct tv when our account was closed. We have received calls from several different collection agencies regarding this same issue. We have asked for substantiating documentation and have not received it from any of the calls that we have received. I have told each of them that this is harassment until they can provide documentation for their claim ... we are at out wits end with what to do ... We have excellent credit an pay what we owe ... We do NOT owe this and I am not paying but I cant seem to get the calls to stop ... currently the company calling us is IC System -. - - - - MN - phone - claim no - PLEASE HELP!! How can I file a harassment claim against this co who prob purchased what - - could not provide documentation for at pennies on the dollar and continue to sell it to other collection agencies that continue to harass us ... Any assistance would be greatly appreciated