Disgraceful Service

I am writing this complaint, mainly to see how long it takes Cell C to actually not respond, but to investigate/resolve my issues. Because I see NONE here. For the last 2 years I've had barely any reception at home. My phone is on wifi majority of the day! Thankfully I have that at home/work. Despite this I've upgraded in June'15. To a contract specifically stating R709p/m. First bill over that R820. I asked and they explained I was in my limits, but there was a pro-rata because I upgraded in the middle of Aug. I could accept that. During Sept sometime, I reached my limit and my phone was BLOCKED from any outgoing calls, good! But my data was also off, how on earth could I use 3 GIGS of data, when my phone is on wifi majority of the time! This month I get a R1200 bill! Suddenly I requested a R400 limit over and above R709 pm!? (I could just as well have taken out a bigger contract)! But last month I got cut off!? How the hell does that make sense? I also selected no itemized billing? WHERE?? I am sorry but this is NOT ON! How can you have one thing the one month and something different the other. I want my' recording of our agreement' as well, which you NEVER sent to me