Billing Enquiry not being sorted out

<p>We moved offices in October last year and we couldn't keep the lines so got new lines and cancelled the old numbers in November. Since then Telkom has messed up the billing and I am being overcharged. I had confirmation that the cancellations were done, but the numbers show as still active. I phone Telkom and they push me from pillar to post - sales department refer to biiling and billing refer me to sales or to the Telkom store. I have tried for five months to get it sorted to no avail. Please assist. Thank you</p>