I have no idea why they keep calling me are and they keep calling me and leaving messages for me to call them which is against the law to harass a person for a debt that I do not recall ever receiving a letter but I have lots of messages from them and they are constantly calling me and breaking the law by doing so. It is now not a matter of a collection it is now a method of harassment and it is against the law what they are doing regardless if it is concerning a bill no one has the right to keep calling and calling and harassing anyone. 
