Almost no signal in area

I have moved into a complex, and I'm very disappointed in the Vodacom signal in the complex. During the day the signal seems to be a little bit better, but 3G is almost non existent. From about 5pm, you hardly ever get any signal. It takes me about 15 minutes to open a normal web page, and I can't even check emails with the Vodacom signal after 5pm. I have other Vodacom clients also having the same problems. Can the technical guys please look into this urgently. I'm working from home but can't work with a signal like this. The address is 10 Viljoen Street, Randpoort, Randfontein, 1759. Please assist. Thanks.