Freezing Frames in Starhub Cable Vision

My old Starhub box failed to work just a few days before. So, I had a replacement box that freezes at odd intervals as if the channels are playing pirated DVD. Each and every channel is affected. Thus, it was brought back to Vivocity to get another box. However, the freezing game continues. What is the problem? I don't know. I called up Starhub and the guy was very patient; he explained to me that it could be the switch or the cable wires that...