Very poor communications from Super slow sonic..

I wanted to change my internet service provider from Telkom to Supersonic(MTN fiber). I app**** on 25th of October this year for installation. Since then, after many times of visiting my house from the installer, they said they finished installing and activation on 7th of this month. And I never knew until today if they finished installation or even activation. And they want to charge me from 7th of this month. Normally when they finish installation and activation, anybody from Supersonic is supposed to call me to let me know that they finalized installation after more then one month and tell us what is username or password to connect to internet. But no one call me let me know that they already activated the service!! And when I talked to the call centre and tell them to speak to manager, they said she is busy and they will call me back shortly. But I am still waiting manager's call to explain to me what is happening?? Their problem is they don't know how to communicate to customers. It seems like they don't have standard protocol that every body to follow. Is it because they are still new in the market or simply they are so arrogant?? Let me give you a tip. You have to appoint one person for one customer so that he can give the customer progress of the order and explain everything. It seems like the person calling me is different every time..