Person contacted me on my cell phone- i asked her not to call me on my cell phone and ended the call- she then contacted my office phone and asked me to transfer her to HR - I can not do that since I work from home but gave her the number. She called HR and told them who she was and that she was trying to collect a debt that I refuse to pay. 

I have payed this debt and have receipts but they continue to " collect '' on it.