I have looked up your details and completed a remote Speedtest from your Modem.
You're on the 12M/1M plan and as you can see below the service is working well.
Something to consider is are you doing the tests via Wifi?
How far away from the router you are doing tests from via Wifi?
How many devices are active on your Network when completing your Speedtests.
If you are still having issues please get back to me here.