Unauthorised Cancellation

I had called in at Tracker on 03/11/2015 to confirm if my device was still active as I normally received notification via sms. I was assisted by an agent Sabelo Mbanjwa from Product Support, I informed him of nature of call and to my surprise he told me that my tracker had been cancelled on 12/08/2015 via email and cancellation processed and finalised on 12/10/2015. The email address in which they received \cancellation"does not belong to me and it states that I currently live in the UK"