Been working with our host support on this. I have disabled Cron, emailed our support channel, waited 5 minutes, ran cron manually and no import of the responses and nothing showing in logs.
I've now moved the cron job to our app panel at the host instead of EasyCron, it still runs as normal and the polling tickets task is running with no errors.
I only posted this here to see if anyone else out in the community ever came across this, didn't want to confuse things by cross-posting. Sorry @Paul