No feedback and handed to debt collectors - Poor

After 14 years and many calls to complain about their poor service and no regard for their customer safety I terminated my contract with ADT<br> I called the agent who informed me when the account should be terminated to prevent fees from being charged. Their calls are voice recorded. Approximately 2 months after, they called me to inform that I owed on the account, this I disputed as the fees are paid upfront before their services commence this was paid in cash to the technician who installed the unit. They were to provide me with statements from the account.As far as I knew this was still to be provided. Only to receive a sms now that I have been handed over to debt collectors. They should pull their call recording and listen to the quality of information their agents provide customers. I am still waiting for the detailed statement to prove that I am liable for the one month.<br>