I had this today. Phone up o2 & get a bar done on all direct bill account. That’s will stop it happened agine & get them to confirm by email or text & it’s work so far for me.
Lasevia telephone number is 03300538806
Or email them on firstname.lastname@example.org
& get your money back they can’t get away with this. I hope this has help.
Thanks for the information as it may well help others