I'm on Telstra cable - 500gb a month. Speed should be 100mbs, but closer to 60mbs.
Rang them on Sunday afternoon as was getting repeated drop-outs. Later that night I checked the back of modem and realised kids had moved it and the back connection was just a little lose. Technician rocked up at 12pm the next day . He did speed test and advised it 'looked ok, but just in case' he replaced my wall socket, gave me 2 new splitters and installed amplifier in my ceiling, all for free. Sped it up a little.