AT&T is a very poor service provider, almost a monopoly again as they were back in the 80s before it was broken up by the FCC. Folks, please believe me when I say that it really is not complicated or costly to provide the services such as call waiting, caller ID, call forwarding, etc. but because they are so popular with the users, of course Comcast, Verizon, AT&T (and others) will take advantage