Upgraded contract after No Signal / Poor Battery and now my upgrade it out of stock?! Help...

[NicoleW890]

Hi, I'm a little desperate for an issue to be resolved. I spent the past 3 weeks in Greece where my Iphone died after 3 hours and it never had data/signal. It was a really stressful experience and my internet with this phone is still awful. I spoke to 02 to leave my contract as it didn't comply with the service agreement, but was persuaded into a new Iphone 12 with 5G. However it's been over a week and my track your order still says out of stock. 
1. Why is o2 advertising the product is in stock? and I still haven't received mine? 
2. Has anyone else had this issue with their phone not in stock? I have no way of contacting someone about this. 
3. I am leaving the UK again soon, and very worried I won't be able to use my phone. I was on my own in Greece and had no way of getting up my covid forms, booking references and maps. It was the most stressful experience. I'm wondering should I just leave o2 now after this awful service? and if there's any support/ know how to speak to a person about this. All the contact us directories takes me to another FAQ page. 

[MI5 · Accepted solution]

@NicoleW890 

You need to contact O2.
All numbers are in this guide Guide: Coronavirus Community Help and Support 
When you call, you will be asked for the reason you are calling.
Stay silent for 15 seconds and you will be taken to the keypad options.
Press 2 for Everything Else
Press 5 for More Options
Press 7 for Anything Else which will put you though to someone.
You can also try saying "Upgrade" or "Fraud" to be connected to an advisor.
8.00am is the best time to call if you can.