Lost phone - how to contact o2

[Charlotte17]

I have lost my phone and need to contact O2 but I literally have no phone.  How am I supposed to do this that doesn't involve logging into my O2, because I can't, or phoning them, because I can't, or going into a physical store, because it's closed?

[MrRichAllen1976]

Contact them online using their various social media channels.

If you have a landline phone, I can't remember the number without looking but it'll be on the website.

[Charlotte17]

I don't have a landline and am still waiting for a reply on instagram.

[pgn]

Guide: Lost or Stolen O2 Device? - How to Report it should help, and be persistent on Social Media - links just below work directly for X and FB, not sure about that in Instagram, @Charlotte17. Good luck!