I am surprised they wouldn't rewire machine for you. I bought 2 machines from Maxicam CNC and the big 1530 was originally offered at 380V which they rewired for 220V. There was no extra charge for that. Quite frankly I don't know if they had to rewire anything since most spindles are available for various voltages.
Dust collector too was originally 380V changed to 220V
Machine works well even though I have to generate 3rd phase via Rotary Phase Converter.
I would ask your contact again for 220 V