5 hours ago
3 hours ago - last edited 3 hours ago
That sounds very odd.
I've never heard of someone's phone number changing because their auto-renewal failed.
What account number are you referring to?
There's no account number with 48.
Your account is identified by your phone number and email address.
Is the number on your My48 account not what you expect it to be?
Almost certainly you'll need to contact 48 support about this.
They don't generally monitor or respond to posts here on the Community Forum.
To contact them see the links in my signature below.