On XXXX/XXXX/2015 and XXXX/XXXX/2015, I received robocalls from ARSI that were left on my call notes. On XXXX/XXXX/2015, I called back and spoke to a person named XXXX. She stated that the calls were regarding a bill that I owe to Emergency services. I told her I had not heard of them ; moreover, I had not received a bill from their organization or ARSI. I asked her when the bill was sent from ARSI, and she stated on XXXX/XXXX/2015. Therefore, they began calling me before I could have possibly received the bill. When I told her that I was disputing the charges and to cease calling me in the future for payments, she continued to talk over me, continued to attempt to collect the debt, with the latter not legal once a consumer has stated they are disputing it. She should have simply honored my request. When I requested to speak to a supervisor, she transferred me to a person named XXXX. XXXX stated she would make sure I did not receive calls in the future, but she further stated they were not doing anything illegal. I find it to be pretty shady that they are trying to collect on a bill where the provider is unknown and there has been insufficient time to have received a bill that states my credit rights and the option to dispute the bill. After the phone conversation was over, I sent a written notification via their e-mail XXXXXXXXXXXX to cease placing calls and that I am disputing the balance.