I think you need to call again and hope you get someone who knows what he or she is talking about.  You are connected at 100 MBS because your computer is connected to your router or modem Ethernet port, and you can ping the server at the central office because it is connected to the DSL server.  You are therefore getting an IP address and you have a complete circuit.  What is not happening is that your equipment is not logging into the server properly.  Sometimes the Verizon software on the CD that is usually provided doesn't like your computer configuration.  Mine didn't, and I had to call the Verizon rep to walk me through a manual set-up.  It involves giving your modem or router or combination modem/router a password and user name.  The number of processes running on your computer almost certainly has nothing to do with your problem.

 

Good luck!