Adsl Keeps Rebooting

<br> I am so annoyed my internet been rebooting since last week sunday .... i keep phoning and messaging on twitter and everytime someone says they are sorting it out and it sorted but then it still does that ..... i usually get a constant 2.2mbs speed now if i am lucky i get 0.3 this is **** ... i pay for a service that needs to be sorted .... please sort out asap <br> <br>