Terrible Signal.

I've been with vodacom since I started using my first cell phone, but in the past 3 - 4 months the network & internet has been so bad. I would chance, but to what, there is nothing worth going to. Either vodacom must start waking up or they will lose clients. Everyday I'm having problems connecting to the network, every 10 minutes I have an exclamation mark on my signal.