Finally, after 4 long weeks, i finally have a new modem, which has got everything back up to the speed it should be at, and with no connection issues.
After insisting it wasn't a modem problem, and saying it was my comp that was causing it, they finally decided to agree with me, and just replace the old damn modem.
Now everything is running smooth the way it should be. Still fucking idiots though for taking them so long though to realise that was the probem...
