Migrating from existing contract to new

[Jillaboo]

Help!! 

i upgraded through a 3rd party who work with & are affiliated with o2. Was told I couldn’t upgrade as such as issues with transferring number so to take out a new contract & phone 202 to migrate my number to my new contract & cancel the existing one. 
5 phone calls to 202 & a week later this still hasn’t happened. It’s such a simple thing & I keep getting fobbed off from the advisors that it will happen in 24 hours. Each will follow up & make it a priority & of course nothings happened!

it’s an absolute joke. 
I will be making a formal complaint but in the meantime does anyone have any wise words as I’d really just like it sorted!! 

[Jillaboo]

This is much more helpful than o2 customer services so thank you! 

perhaps me being a bit thick here though but as part of my ‘upgrade’ I obviously got a new phone with a new o2 contract…would I put the PAYG sim that you are saying to get on a different network in the new phone & then cancel the new o2 ‘contract’ but surely then I’d need to return the phone as it was supposed to be part of an upgrade?! 

[MI5]

@Jillaboo 

No, you keep your new phone and contract but your number gets transferred from the old contract to the new one and your OLD contract is cancelled automatically.

[Jillaboo]

Yes that makes sense 🙈. 
the PAYG sim goes in the old phone for 30 days then request a pac code again to port back to o2 new phone & contract? It doesn’t matter which PAYG network I use? 
seems such a long roundabout way to do it but if it works then I guess that’s what matters! 
I very rarely upgrade for this reason- it’s just never simple for me! 

[MI5]

@Jillaboo 

Any network other than O2 will do.

giffgaff runs on O2 so you'll get the same signal level.