Ridiculously long TAT for Simswop

I contacted the call centre yesterday at 13:30 pm to request a sim swop as I had upgraded my contracted.<br> I was told that the turnaround time is 8 hours for resolution. it is now over 14 hours later, and still no sim swop was done.<br> <br> I have contacted the call centre 3 times thereafter and each time was told that an email will be sent to request that my request be expedited.<br> <br> The last consultant who I spoke to transferred me to the complaints department only for me to hold on for over 10 minutes, and then get some stupid automated voice telling me that the call will be ended and I am welcome to call back.<br> <br> Please all I want is a sim swop so that I can further use your services on my new handset, and this seems like to big a job for your company