Cut hard plastic

Hi guys,

I have an older suction cup phone holder for my iphone and would like to screw this onto a free space in my dashboard. To make this work I would need to cut the main body of the holder in half. This piece is hard plastic.

Now back in Germany I would know what kind of tradesman to talk to for this. Best would be probably a hot wire or someone who can cut plastic and protect himself from the dust.

What would I google/look for in Australia for a shop/tradesman that could do this for me? I am in Cairns and not a clue who I could ask to cut this piece in two for me.

Cheers

Philipp