Las Vegas Packet Loss

Hi,

I've had moderate to severe packet loss since last Monday.  Cox came out last Friday and said it was the lines from the street to my house.  Today a subcontractor came and replaced the line from the street to my house, as well as the line from the side of my house to my modem.  Unfortunately I have the same issues with packet loss.  The packet loss is consistent.  When I run PingPlotter for example, no matter what IP I use there is packet loss as soon as the signal gets off my network onto Cox's.  Please fix this. Thank you.