I purchased a modem from the Charter webite. I was told that I needed it to get the internet installed at home. When the Charter tech came to my house to do the installation he said that he could not use that modem for wireless internet. ALL I want to know is how to return the modem for full credit. I have made 5 different phone call and no one could help me. Can someone just tell me how to return this thing for credit? Motorola SB5101 read full review »