Unless the local node is completely saturated, I would expect you should be able to get much in excess of that. If you're ever up at 2 am try running a speed test then.

I'd also try to rule out everything on your side, house wiring, routers, switches. Basically try to speed test it with the line they wired directly to the outside.

And upgrade any old network hardware.

Unless you're talking all they offer is 30Mbps. Then that's an ISP problem.