Overcharging

I've been with Autopage for a few years now, and every few months there is something that makes me so mad I want to cancel my account. The latest one is, data bundles. They phoned me in May asking to take out some extra data bundle on my existing account, and I said no thank you, I never use much more than I get every month. Now all of a sudden, it's 12 June, and my contract is OVER with R 600.00 and Autopage sent me a message this morning telling me there is a way to calculate and prevent this from happening. Then I remembered the phone call. Now my account is sky high because I didn't take the new data bundle. Well I have news. My contract expires 23 June and I'm NOT renewing it with Autopage. I wanted to switch from CellC to Vodacom through Autopage, but I'll rather go to Vodacom myself. I'm tired of this sky high bills after 6 months in the contract and then is stays high until you complain. But next month there will be something else. <br> Regards, <br> Lihand? Sonnekus