Old username couldn't be used, had to change username - I want my old username back!

[IslandBoy1]

I haven't used O2 Community for some years (since 2021). I had a question today (about texts) and found it so impossible to get contact details, I've reverted here. I was logged on to my MyO2 PayMonthly account, tried to post a question and was taken to the "complete your profile" by choosing a username. I entered my existing name, IslandBoy, and was told username already taken. Yes, by me. But there wasn't a button for that so had to accept IslandBoy1.

I suspect that my change of email address may also have been an issue for the creaking systems. So

1. How do I get my old username back?
2. How do I contact someone in data protection or security to report that my old email / password now has a compromised and unsafe password so those details obviously need updating / deleting / merging with my O2 account current email.

Thanks.

[MI5]

@IslandBoy1 

You need to talk to @Kei-M_O2 

[IslandBoy1]

Amazing. I searched for old posts of IslandBoy to double check, and O2 did the same to me three years ago! Wifi and 4G Calling on Samsung Galaxy S10 - Page 2 - O2 Community 

@Kei-M_O2 as advised by MI5. Thx

[Enlli]

@IslandBoy1 None of those are around now. @MI5 has given you the only one who can help at the moment 

[MI5]

Non of those are still around @IslandBoy1 

I've given you the name above.

[IslandBoy1]

Ta