I'm tavelling abroad for a few months and i received "make a charge-able action"

[hasanshabbir]

Hi, 

I have been travelling for the past 9 months, but I received a message stating this

"Hi, just a reminder that you need to make a chargeable call/text or use data otherwise you may lose your number and any available credit. To check your balance text BA to 150."

My question is that I can't seem to make calls or text via my phone number, I need it for my banking apps and other OTP's 

I top it up after ever 2 months, (not so punctual at that). Anyhow I don't wanna lose my number, can I simply keep the number alive if I keep on topping it?

[bristolian]

To use a PAYG phone abroad, you need to have roaming enabled. This is done automatically on first usage in the UK. Did you use this phone on EE's UK network before travelling abroad?

Have you been able to use this PAYG phone abroad previously?