overcharged by NOS
I went travelling to Morocco for one week, my phone was constantly on airplane mode, not one minute was it not on!. To my HUGE surprise, NOS sends me a bill of 45,11€ for ‘trafego de dados em roaming” which is absolutely wrong, and obviously with no extra information. I saw on other forums that this ‘mistake’ happens a lot. I would like an explanation and mainly this fee waived from my bill. How shall I proceed?
thank you.