Billed for ADSL i cancelled numerous times

I moved to a new house in September 2018, and since then have been struggling to cancel the internet subscription at my previous residence after numerous calls to Telkom. I then cancelled onine a few times, and only on the 03rd of January 2019 receive email confirmation hereof.

Now in August 2019 i receive an sms from DC Fourie attorneys for an outstanding Telkom bill. The bill is for internet usage for January, but i havent been living at that house for the period of the bill. How does this make sense?