NPS, XXXX XXXX XXXX, continues to contact my cell phone. I have spoken with them once, whereas they refused to provide me with any information about who they were collecting for, but told me if I did n't send them {$4000.00}, I would be served with papers the following day. They would not verify the name of the credit or provide me with any information that this was a valid debt. I sent them a letter asking them to verify the debt and also to cease communications with me and anyone associated with me. I have not received verification of the debt and they have continued to call. Today, they called my office and when I told them I could not speak to them at work, they said " Find, we will contact your Human Resources and start garnishing your paycheck. '' They did then call my Human Resources but then hung up on them.