SHOCK after shock, I never agree on this huge amount p.m

New contract, not what I agree on. I agree on R489 for 24 months - first statement last month R707.59 this month again R707.59 - which is a jump from R379.59 more than double, I did not budget for this last month, and again this month. No sms, no phone calls, use some of my data, had to buy extra data. Last pay day I was left in the dark, no money to buy prepaid electricity - sit in the dark, and it seems to me again this month.