I went to montenegro on 14/05/2026 and bought a data pass (10gb for 5 days) for £20. I bought it basically as soon as I was able to after landing at on 14/05 at 10am. I believed i was on the airport WiFi but it was very spotty.
I am shocked to see that my bill this month was nearly £100 rather than £47 (£27+ £20 data package).
I have been charged £33 for just 250mb of data usage on 14/05! This seems absolutely ridiculous. Unfortunately, it can only have been the data used to buy the add on via your app. The data has only been used to pay you for my extra data rather than getting an e-Sim, which was my original plan.
Ive also been charged £16.80 for two phone calls adding up to about 6 minutes!
Ive been very satisfied with iD but this is a rip off and I am quite disappointed as it builds up so quickly people are likely to get charged just from receiving notifications before they are aware that countries are not in the free zone. I'll have to let other people know this is a serious issue.