Call centre agent never proceed with request

I called cell c customer centre to add data to my account. I spoke to the call center agent who first did not understand my request, but after about 10min was able to carry out what i asked him. I agreed that 300mb of data can be added to my account which he said was successfully added. Respectfully he still asked if i would rate his service and i said yes i will. I waited as always about 30 min to see if i received my data and to no avail i was still waiting. I called back the call center spoke to a different agent this time. I explained to her that i called in and what my request was but still did not received my data. She put me on hold and came back saying that my previous request was never processed as in the call and that my call was never recorded as per standard. i asked if i can speak to the manager or supervisor but he/she was on a call. I gave the agent my cell phone number so that the manager can call me back but its been 4 hours later and still no call or any data to my phone. <br> I feel that this is not the type of service that should be given to customers from a customer care center i called into get my data added for something highly important to be done. Disappointing