T-Mobile I have experienced unexplained charges from the company, and unethical treatment by representatives. El Dorado Hills, California

 After many years of dealing with odd charges(some reversed, some not) I finally cancelled my service in September of 2011(contract was up August 12, 2011)  Breathe easy right?  Not so much, today January 24, 2012 I receive a letter with charges of $15 for phone service which is odd as not only is this a small amount compared to the $200 I was paying per month, but also because I was on the Flex-pay(must prepay every month for service) so I decide to call. 

 I then find out I have been turned over to a collections company via the automated system which so abruptly disconnects me when attempting to be transferred to a representative.  Next, I  call from my fiance's phone to see if I can get some answers from an unrecognized number(I ported my number to the new cell company, so it remains in their records attached to my account), although I do manage to get through to billing, upon questioning her regarding the $15 charge and requesting the name and number of the collection agency I was supposedly forwarded to, she immediately disconnected me...  From this treatment I am reminded of the many reasons I am glad to not be using T-Mobile.  I will continue  my attempts to call in the hopes I can speak with a manager.