hello everyone im using Primetel Cyprus in Hungary without worry about data or roaming 4 month spending fair usage policy, because i buy prepaid package 100GB which this does not apply roaming 4 month FUP, and this was written to me by customer service, also i top up my data to 300GB which price is 50EUR and i buy another 300GB and top up 5EUR to extend esim expiry for 1 year (365days). now im writing this from my cyprus mobile net with using hotspot on my laptop. i can able to use full of 700GB data while i roaming in EU countries.
Have a look here from some guidance:
EU mobile operators should apply the EU wide policy for fair usage and the pricing for excess usage is also defined within EU policy.
You shouldnāt be charged more, thereās also a link for what to do if your operator breaches the policy.
I canāt tell from your post if that is the case here.