Phone call was received, the medical debt collection agency identified themself as a law firm. No statement regarding this debt has been received and when asked for information he said he would forward it to the attorney. He continued to say this when asked for more information regarding this debt. And he said this XXXX times. He spoke to a spouse regarding this debt, which without prior authorization from me, the patient, I feel is a violation of XXXX. The caller was hostile, threatening and vague. When explained that there was no difficulty in paying the debt once we had received verification of their company, he continued to refuse to agree to send us any information in writing regarding this debt.