Worst customer service ever

Dealing with Telkom is truly the most painful experience ever. After paying a deposit for 2 land lines on 7 May and making over 20 calls to Telkom to follow up i still do not have the lines installed or the numbers ported. Their staff promise to call back but there is no follow up done unless I call them.

Speaking to Team leaders does not help either as they do not ensure that their staff do what is expected. i am really at my wits end as to how to have this issue resolved.