Bad service from Telkom mobile agents

I cannot send sms's to short code numbers, I spoke to 5 different agents who gave me 5 different stories the last person I spoke to was Siya from the Durban call cantre who was mumbling his surname after he firmly refused that I speak his manager (luthando) because they would tell me the same thing he was telling me,earlier on spoke to Eugene from the durban call center,who insisted I buy airtime and my problem would be solved but wasn't,I no longer want to speak to any agents coz they don't assist but refuse to let you speak to a manager or give you a technical department or even give u a complaints number.. Can someone please assist me