Very very poor service

My husband took out a 4mb wifi deal from telkom for R199 for the first 6 months and R329 from the 7th month for the remaining 18 months. We then received an invoice which was more than R1000. I then phoned telkom and found out that they processed a wrong package on my husband's account. 5 escalations has been done in 3 weeks time and no feedback has been received. You can't even speak to a team leader as the agents has to put in a request for a team leader to phone you back. From last week Thursday we've been waiting for a call back from a team leader. First agent to escalate this was Mhluniswa, 2nd Mulusi, 3rd Zamaswasi, 4th Bongile and 5th Micheala. Zamaswasi told me that Njabulo will call back and didn't. Miceala told me she will call back and didn't. All the agents told me feedback will be provided within 48hours time and it has been 3 weeks of 48 hours. This is very very very poor client service. All of them escalated this to the processing department which doesn't do their work and senior management has been included but nothing gets done.