Trudon and Telkom

Since 2017 I have no adverts in the yellow pages. Suddenly I receive a invoice for R 3900+ for advertising. On all my requests for proof of advertising no response. You can't reatch them per telephone. Now they put the bill to telkom who disconected my services for non payment although my telkom account is fully paid. No telkom no internet and no response from either. It is useless trying.