Anti-clockwise is correct. They tighten as you pedal which is why they can be difficult to get off.
Do you have the correct tool for the freewheel? If so, ideally you should be able to use the axle nut or QR to hold it in place to allow the use of plenty of force with a long spanner without the injury risk of the tool slip[ping off. Get someone to hold the wheel upright on the ground and hit the spanner hard in an anti-clockwaise direction with a hammer as shock tactics often work for stuck threads.
If you don't have the correct tool, all you can really do is find someone who does, try it with a hammer and blunt chisel (you may wreck the freewheel doing this) or else dismantle the freewheel and find someone with a bench vice to grip the body and use the wheel as a lever. Dismantle carefully and watch to not grip the crucial parts in the vice jaws and you can rebuild and re-use the block after doing this if you rebuild it again.
I (personally) wouldn't use a blowtorch to heat a wheel hub. Bearing races are case hardened etc. You could cause irreparable but unseen damage.