My DSL is disconnected frequently

I'd been happy in October with my 5Mbps DSL. Now it slows down to 128kbps plus repeating half-a-minute disruptions, followed by 10sec ephemeral connections.

Ô vraiment marastre Nature,
Puisqu'une telle c'nnexe ne dure
que du minuit jusques à 00:01!

Now I am posting with trad 40kbps modem. I know that the situation is far worse in the rest of the world, however, this instinct toward the speed... something druggy is here.