Comment by impossiblefork

Yeah, that's all completely illegal.

Sanctions abroad can't allow you to refuse service in this way. Depending on whether legal action is taken all these firms may be blocked from operating in Europe. There's also a specific blocking state further reinforcing this kind of thing.

Because of the blocking statue, contractual terminations because of sanctions are forbidden, so these firms still have to deliver. Apparently you may only void contracts due to terminations if you apply for a derogation from the European Commission.