No signal!

It is almost one month and I still have no signal in Glen Austin, Midrand. I cannot phone out, receive calls and let alone browse the internet. This is now extremely frustrating since Cell C sent out a message informing their users that they have upgraded and we no longer need to roam on Vodacom. I have had various technicians calling me, but still nothing. Why can we not roam on Vodacom until the problem is sorted? Please get this problem fixed!