So I've read the sticky's and no I'm not saying shaped or throttled!

I have spark ADSL and I pull a very reliable 7.5mb down .8mb up since they upgraded my colkin cab about 5 months ago. Over the weekend speeds where normal but today I get home from work and I'm back at .5mb up/down on - I've done all the usual stuff, restart the router, test with wired connection, leave router off for 30 mins, test again with wired connection. My connection speed is 10mb down and 1mb up on my router settings with the line attenuation and noise the same as its always been since the upgrade.
Should I leave it till tomorrow before calling spark tech help or should I punish myself tonight (only to find out my printer is low on ink which is why my internet is slow)