Useless Telkom

Where do I start? Im so frustrated with Telkom. We set up a time and date for them to connect wi fi at my home. Before they come out they phone to confirm if you home. They phone me to my cell,after i gave them my work number because i wont be able to answer my cell during work hours and then they phone from a private number, i cant even phone them bac**** Phone 10213 stay on the line for 30mins at a time...no consultant assists me! 2 days later they phone and set another date and time and the same happens again and again and again!