Poor network

I am seriously fed up now with VODACOM!! For the pass 3 weeks i have had no network on my phone and if the bar shows 4G it is extremely low and my bar remains at 1 bar. Last time you guys said its because of load shedding but we haven't had any load shedding in months and now its worse then ever. I'm seriously considering changing my network as I cant deal with this anymore or just upgrade your towers or do something about about this poor network in my area.