I've even heard of the box being filled with earwigs. Removing them fixed the problem. Have them check the line between your house and the pole. If this is the case, have them replace the line. You can also have them turn the amperage up on the line.
Voice calls require lower amperage than modem calls.
Turning up the amperage solves a lot of connection problems. If you think you are on an analog switch, you should get moved to a digital switch. If you don t want this service, simply cancel after a month - it is generally more work for the phone company to switch you back to an analog switch, so they will leave you on the digital one. Identifying your Modem Manufacturer Click Start, Settings and Control Panel .