New Lines Activation Nightmare!

I recently activated 20 new lines with our "account manager" at Maude Street who has given me nothing but poor service. She has activated sim card numbers I don't have and when I sent an email requesting clarity I don't get a response via email and my calls go unanswered. I have asked for some lines to be terminated about two weeks ago and have not received confirmation that it has been done. Are we going to be billed for lines that are no longer in use?

I need to provide feedback to my clients and I cannot as I'm constantly ignored while bringing business to the company. If she doesn't was to assist, can I be referred to someone else? Who is the manager at Maude Street? Can this matter just be finalised?