Telkom not changing my sync rate

<p>I have been having problems with telkom for the last 5 years. About a week ago a technician came an droped my sync rate down to 2mbps. Since then I have been struggling to get them to change it back to what it used to be which is 5mbps. They are refusing to change it back since I am not paying for it. I have had a 5 mbps line for the last 5 years and this is now just a problem.</p>