If you are a pay monthly customer, not a lot @IH.
Spain is in the EU roaming zone, so you can call and text home at no extra cost.
Depending on how long you are there (and how much data you have) you can use up to 25Gb of data with no additional cost (after that it is £3.50 per Gb).
There is a community guide about roaming changes for pay monthly customers here:
Guide: EU Roaming Changes from 15th June 2017 “CONTRACT ONLY"
If you are a pay as you go customer then the community help is here:
Guide: EU Roaming Changes from 15th June 2017 "PAY AS YOU GO ONLY“
Please note, this is not customer services and we cannot access your account. Do not publish personal details (email, phone number, bank account).
Link to our guide on how to contact them can be found here
