Internet connection

I am based in Gauteng in the East rand area. I decided to sign up with Rain after my friend recommended it to me. The connection was okay until last month. It started 2 months back by allowing only one user to connect through internet, that means no other person will connect until I am done as I am using rain for work purposes. The past 5 days has been the worst. I am unable to watch TV with my family or connect via my cell phone. I feel like I'll pay for the service that was not rendered. I just need to know what is going on because their debit order goes through every month without failing. I am so frustrated.