Poor upload speeds

<p>we have a 4Mbps line with mweb and our upload speeds are meant to be in the region of 500-400kbps, but for the past few weeks it has been struggling at 100kbps.</p> <p> </p> <p>when i call mweb for help i get told that to fix my upload speeds i should disconnect all my devices from the internet.</p> <p> </p> <p>this is appaling ! </p> <p> </p> <p>then i call again and a lady seemed to have fixed the line for about 2 days, she believes its the exchange.</p> <p> </p> <p>after it went nack to 100kbps uploads i call again and i ask to log a fault. i get told that i cant log a fault because one has already been opened in a neighbouring suburb. </p> <p> </p> <p>so now im stuck with terrible internet yet im still paying the monthly fee.</p> <p> </p> <p>is someone going to help me? or should i switch ISP?</p>