No feedback and still no signal

I posted a complaint about having no signal on the 25th March to which I am still waiting Vodacom's response and in the meantime my phones signal is still so poor that I can hardly make calls or use the internet. In addition I have to charge my phone more often as my phone is constantly searching for signal !!!! so if my phone isn't dead it has no signal what good is it having a phone I cant call off??