My question involves collection proceedings in the State of: Kansas

I allegedly wrote a check for 26.00 in 2001 to a gas station. The last entry to the court docket, "FILE STAMP 2/12/2008, ENTIRE FILE SCANNED THIS DATE; COURT FILE DESTROYED" When moved back to the state where this allegedly occurred. i have been receiving collection calls and letters. demanding over 700.00. The statute of limitations is 6yrs i thought in Kansas?, The latest entry now states affidavit for renewal. What do i do,?