Complain to MCMC with OFFICIAL letters. Also write OFFICIAL LETTERS to P1. If i'm you, I'm not gonna pay any bills until they settle it. Keep a record of your speed test on a daily basis(say for a period of 2 weeks) and put this in a report to MCMC/P1 as evidence of P1 suckiness.

Streamyx is still king...haha..(well, at least for me).