CELL C BAD CUSTOMER SERVICE !!!!!

I just contacted Cell C customer care for assistance. And had the worst experience ever!! ( I don't even think they should get a star)

I called in to ask them about why my monthly debit order, it was more then it was suppose to be for the past 2 months.

First the agent was talking to someone else before greeting me. Then she said she couldn't hear me Then she told me they had a price increase which i wasn't notified of because i never received any emails or post since the beginning off my contract I've called in twice just after my first month / debit order month to request my statement, which i never received. So i asked her to please tell me what my email address is that she have on her system or where they are sending my statements and post to and she got irritated with me after telling her numerous times i haven't received any post. Then she told me she's been to long on this call and she have to end the call, So i told her, i first need to check my emails to see if i received it before she hang up and she said no she has to end the call NOW Now my question is how long is a agent suppose to be on the line to assist a customer and isn't the query suppose to be resolve first? Or do they only have less then 8 minutes to assist a customer because that is what she told me. I'm also very unhappy because they didn't call me to make any communication stating that they have a price increase and i haven't even had the contract for 5 months how can i have a price increase, if i knew that then i would never even taken the contract out with them, please help me because this wasn't explained to me and i don't think this is by law to change the price without making sure the customer is informed an understood why there is a price increase after telling the client it is a fix amount to be paid through out the contract Please i beg you please help me.