Incorrectly charged for phone calls

It has recently come to my attention that I was incorrectly billed for collection phone calls in previous months. The only collection phone call that I have ever received from you was on the 19th or 20th January 2016. Take off all the incorrect billings for phone calls because I will not be paying for that. I will also not pay for any email received after 20 August 2015. The email said I must reply for payment arrangements which I did so you have no right to keep bothering me. I will pay off this account ASAP and will never do any business with you again. Really disgusted!