Forced to leave plusnet due to poor broadband

[#1]

Hi been with plusnet a few months now and from the first months the broadband has been shocking somtimes as little as 0.75mb  this happens as much as twice a month ticket gets raised then have to wait up to 72 hours.
i once tried to leave and got quoted £90 not willing to pay that so bit my lip and stayed now still i am getting the rubbish broadband can i please get this sorted once and for all very disapointed customer

[#2]

Have you raised a fault as suggested in your previous thread http://community.plus.net/forum/index.php/topic,101392.msg860343.html#msg860343