You can't write this off as a loss as the shares you hold will...

You can't write this off as a loss as the shares you hold will be converted to ISHS shares. If you find someone who wants to buy your ISHS shares, then you should be able to write off a loss on your tax return, suggest you talk to your financial advisor or accountant. If EVM list somewhere else, then you can sell for whatever the SP will be listed at but you will have to wait until they relist, that is if they ever relist.

You need to ask yourself, will I sit this out a bit longer to see what direction this company is going or do I file a complaint / class action with other fellow shareholders? Maybe consider meeting up at the AGM, talk to other holders and see where this takes you. If it was me, I would attend the AGM and see where things are at, get a sense of the company's direction and what other holders intend to do.

good luck.