Mio Modem dosen't work!

Just today, when i went back home and booted up my computer, I tried logging into Xfire, a chat service. Usually, in the process of logging in, there would be a small message telling me when the connection would time out. Most of the times, it logs in when there are 117 seconds left. But now, it logs in only at 113. Yesterday, our modem had been changed, because our old modem kept cutting off randomly. Later, I called Singtel about this incident. The friendly service person then guided me through the speed test. My plan is a 3mbps plan, yet, it only managed to get a maximum of 0.6mbps. My computer was right next to the modem, and my ping was a mere 11 milliseconds, so it should not affect a lot. Obviously, the modem has to be changed again. The serviceperson told me that the technician would be coming tomorrow at 4pm, so hopefully, this technician would fix the problems