No Feedback for days

I app**** for a Router package - 5gigs for R99 at the beginning of November, at Cell C Direct. Patience assisted me. I gave all my details including my banking details. By the Friday Patience called back and said that there is a problem with my banking details and that they would sort it out and she would call me back. She never did. I had, in the interim, tried calling the call centre sales dept. back. I wait on the line for 20mins for someone to answer the call, but i would either have to cut the call myself or get cut off automatically. However, when i eventually did get through on two other occasions, the agents assisting said they would forward an internal message to Patience to call me back. They also told me that the problem is that they require me to send a copy of the bank statement to them but they cant give me an email address to which i can send it and that they will get Patience to call me back. She never did. I am so annoyed with having to call to follow up with them when they are supposed to be doing that. I am busy at work during the day, and i cannot afford to sit on a fone holding on for a call centre agent to answer me. I need feedba