Refund from telkom

I've spoken to 5 consultants from Telkom, told me to send my banking details them, and it was done as requested by the consultants, when u owe the they are quick to send u emails and SMS. I think telkom's management should block the emails of their consultants because they can't even reply to a simple email to say we've received the document. What make me agree again is, I call them everyday and I speak to different agents and I have to explain the something everyday... Even their team leaders are not professional... I requested a paid up letter, and it took them more than 7 working days to send it to me. I think Telkom should train their staff about customer first...and they should be customer orientated... What's frustrates me is I always send them emails but they don't respond to should that they are busy with my query or maybe the is something that I should do, I have prove that I sent more than 10 emails but no response...or maybe is not the consultants and their team leaders... Its their process and procedures...

Thank you