Bad Service

I have a contract with Cell C which is close 2 R1500 a month that I pay, I asked them to to me up with 2Gig (R249) data yesterday morning bcos I depleted. They did, and later in the day my data was gone, I was in the office the whole day connected to WIFI and hardly on the phone. When I called to enquire I spoke to a Bongiwe and later requested to speak to a Team Leader who I found to be very rude and has no business ettiequte (Mokgadi) call ref# ********** ********** 40. She flatly refused to assist just passed on a message to Bongiwe. Why must I pay for such bad service? Coincidentally I was enquiring the same morning about WIFI ROUTER which I wanted to add (Refer to Smangele Mokoena's) emails @08h29, right now I don't think it's worth going that route. Will have to look at other service providers. I have written to them before on good service about a certain agent. I want my data and am prepared to terminate the contract and cancel all debit orders in my account for this incompetence