I'm paying $49 per month for 608/128. It stays up MUCH longer than Verizon's connection did, but apparently the Verizon-owned CO is limiting me to 256/64. I don't know what I can do, since Verizon doesn't offer any kind of support for non-Verizon DSL users. I called my ISP about this, and they said "wait until monday". Right, as if that's even an option when I'm being bogged down NOW.
Did you tweak your PC yet? It sounds like you may need to tweak your PC for broadband. Unless your connection has been established via line share (data line uses your existing telephone line), I don't see why Verizon is degrading your line speed. If not so, then your ISP may need to get Verizon to change your data line to a different copper pair in better condition. Be patient, depending on who your ISP is, they'll eventually get it done.