Poor customer service

My simcard was unable to connect to the network due to damage (according to the call centre) so I went to the the Carnival Mall Cell C store to get my new simcard and get a swimswap service. Unfortunately the gentleman at the shop told me my sim and ID do not correspond. I explained that this simcard is a prepaid and I bought from Cell C street marketers who at the time convinced me to port to Cell C as I was using the other network. The consultant at the shop then told me to buy the unrickered sim and phone the call centre. It is only quite a disappointment to be referred to the Cell C call center with the knowledge of how a struggle one will experience to get help there. First of all the questions you'll be asked ( I understand they are for security reasons). I mean I don't keep records of each and every transaction I make. If for instance emergency recharges how many did I make in a month. I use my sim for both personal and business purposes. In many instances I buy voice bundles after recharging and if they become depleted I request for emergency (as the name relates) recharge. It is unfortunate and disgusting to tell a loyal client that he failed a security test because they can't remember the number of emergency and other recharges. Secondly the unprofessional behavior displayed by the call centre agents is appalling. Like I've said I'm using this number for business purposes also. Imagine the number of business cards that are bearing this cellphone number. Please assist me in solving this problem as it also affect my customer service. Some of us we care for our customers' well being.