Network issue

I went to the Cresta branch on Saturday morning to get a new cellphone as I was due for an upgrade. I ended up getting the LG G4. I was told that the sim would be active within 2 hours, 4 hours later the sim was not active and I could not make or receive phone calls. I went back to the store, the salesman checked on his system and he said that everything was active and that I may need to wait 24 hours.<br> <br> It is now Monday 11:21 AM and I'm still having the same issue. I tried calling your call center onto receive an automated message \The call centre has been closed".<br> <br> I need this issue resolved immediately otherwise I will take my business to another network provider."""