Default against my name

<p>I had my telkom adsl line from 2 ********** in April 2016, i decided to go for Telkom Wifi R699 50Gig package. So i completed a form to cancel my adsl line together with my ID, emailed it to various email addresses which i got from Telkom shop. I noticed that it was cancelled even after 3months, so I tried calling and emailed my paperwork again. No response, in November consultant calls me and i inform her, sent her my correspondence emails, said she will clear it up. Now i notice a default against my name. Could telkom not see that i have gone from ADSL to Wifi? How many times should i contact someone to resolve this?</p>