Yes, I am having the same problem (disconnected issue) as well. One day down few times, and it continue for several days. I have ask maxis what is the solution for this, and the 2nd level (technical support) told me that no solution for long time. As they cannot control at all. Everything is under TELEKOM control. If u want stable Internet, better get Unifi. Yours can terminate the Maxis Home service, as they can't guarantee the down time (this is what the technical support team told me!!!)
I agree that when I use the provided phone to call maxis hotline (123), everytime I need to wait for at least 10-20 min before someone pick-up the call. Everytime when they refer to someone, I have to wait another 20-30mins. Since they can not guarantee the level of service, u can terminal the service without paying penalty. if maxis ask you to pay the penalty, then u can appeal thru the consumer tribunal court.