Internet and whatsapp not working at work

This is my 2nd complaint. This morning I received a call from cellc informing me that my problem is fixed and I should be able to use whatsapp at work and the problem is with my cellphone. At work I cannot access the net so I can't send and receive whatsapps. I keep on receiving messages that I must switch on data roaming. Now explain this. How come I never get the same messages (data roaming must be switch on) at home if the problem is with my phone as cellc claimes? I feel this is totally unacceptable. If this problem doesn't get solved soon I'll have to cancel my contract at the end of my 24 months and I'll advise every1 to stay away from cellc. Your service at this stage is very poor. Another problem we can never speak to management to lodge a complaint as the customer always comes 1st. If my cellphone is the problem as cellc claimes they should have offered to have a look at my phone but nothing was done, after all I bought it from them. I'm so so dissapointed in Cellc. At this stage I'll have to take my complaints to the consumer watch.