Trying to cancel my Telkom ADSL line has been a nightmare!!!

I cancelled my ADL line in writing to Telkom on 27 February 2018 received an email back saying it would take 21 working days to date I have had no correspondence from them and I am moving out tomorrow! I have called 10210 number and dealt with two different people and they were escalating to resolve this, that's as far it has gotten, no one comes back to me. I'm concerned as I need the service to be disconnected before the new owner takes occupancy tomorrow. Can someone please urgently assist I have paid my bill today and everything is up to date. Hendrik Stef**** Riekert Telkom Account number: ********** 49317 Tel: **********