Poor Customer Service

I have contacted Cell C 24/04/2015 to do a Sim Swop on two numbers on my current contract, the first agent Leevale requested the Rica Serials and ensured me that i will receive a call in 2 hours, however on following up with the call centre agent namely Thabita I was informed that the call was logged for between 24- 48 hours and according to her if there is a delay it takes 4-6 hours,it would seem that the info passed on by call centre agents are totally inaccurate as the timelines are inconsistent, as a paying Customer i feel that this is totally unacceptable , misinformed by agents ,and doesn't reflect the actual times deemed for actual query resolution, surely there must be so kind of process within your Company to find exceptable resolution times. Poor Customer Services and misinformed Call Centre Agents for a Leading Telecommunications Company, Not impressed to say the least