Information not available before deposit and possible GDPR/Popia infrengement

Only after I made the first full payment do they tell me I can't use my card for the deposit hold, when I can use my card for holds all the time in my home country, and forced me to take excessive priced insurance doubling the cost that was advertised on the discovercars.com

Only discovercars and easirent has my email address in Ireland and my first day I was already receiving crypto ****s to my email address which I believe is against either Popia or GDPR