This is concerning Guard risk cancer cover with platinum

This is concerning Guard risk cancer cover with platinum. I have been struggling to cancel my subscription, theres no number to phone or emails that gets answered. I was promised my debit order would be placed on hold in stead it went of double two months in a row... Besides that I was asked if I would like to increase my cover to with I said no... But my debit order amount was stil increased. I have been trying te get a hold of someone to cancel my subscription with them and seem like I can't get anyone to assist. Really not happy about this experience with them.