Received a call from an unknown number at my desk at work, the gentleman introduced himself as, " XXXX, '' and continued with the Mini-Miranda disclosure. He advised that he was calling from AFNI, regarding a debt, I informed him that I had previously requested no calls were to come to my place of employment, and to please note the account. XXXX acknowledged that, '' my account had been documented from my previous conversation, the number must not have been taken out. '' And then continued to pursue payment for this debt. I advised XXXX that continual calls at my POE are a clear FDPCA violation, to which he continued to attempt to collect on this debt. I promptly ended the call at that point telling XXXX to have a nice day.