Extremely Slow browsing/video streaming/downloading

I am facing extremely slow browsing/downloading issues for the last 3 days. P2P download speed is normal but browsing/downloading any file give me d/l speed of 20-30KiB/PS. Streming videos from youtube are also very slow. Browsing almost stops around midnight. I lodged complaint with 1218 but they keep on removing complaints from system even if I select option that my complaint is not resolved. I tried to call exchange several times but the calls, if connected, are not answered and the number remains engaged most of the time. I am on copper line using 2MB connection and the line is noise free.SNR/ATT figures are Ok. Is there anyone else from Gulistan-e-Jauhar exchange facing same problem?