No Service since switching to O2 and supplying PAC code.

[PaulS1]

I had a new SIM card from O2 for a new contract, moving over from 3 Mobile. The PAC number was supplied to O2 on 17 Jan and I was told the number would be ported in and everything up and running by 18:00 on 18 Jan.
On 18 Jan I put my O2 SIM card in my phone and the card worked normally before the switch had started. I then put my 3 SIM card back in the phone.
When the 3 mobile card later showed No Service (the switch must have started) I put the O2 card back in my phone and I have had No Service on my phone ever since.
I reported this to O2 on 18 Jan and was told they would investigate and resolve the problem within 48 hours. I have never heard from them. On 20Jan I called O2 again to complain and was told I would hear back within 24hours. Again I have heard nothing from them.
I called 3 Mobile on 21 Jan and they confirmed that everything had been transferred to O2 and my mobile number had been switched.
I called O2 to confirm this and was told I would receive a response later that day.
Again, I heard nothing.
If I phone my mobile number from another phone I hear a continuous tone.
I have not had a mobile phone service since the morning of Tuesday 18 Jan.
How can this be resolved?

[MI5 · Accepted solution]

@PaulS1 

Assuming you have rebooted your phone, If you message O2 on Facebook (https://o2uk.co/O2CFB) , Twitter (https://o2uk.co/O2CTW) or Instagram (https://o2uk.co/O2CIG) , they should be able to help you with this.

[Elland2002]

On 31st march 2023 I changed my tv package with virgin media which included me changing my mobile sim only deal over to o2 which resulted in them somehow adding a completely different name to my account which resulted in my unable to activate my o2 account and o2 blocking my phone number I've since received numerous phone Bill's to my home address in the random individuals name & after multiple emails sent to o2 this issue continues 

[MI5]

@Elland2002 

https://www.o2.co.uk/how-to-complain

[Elland2002]

I have lodged a complaint with o2 I've been advised after 7 months to go into an o2 store & open a new account with all my details number, email address, form of id which I did, the issue continues, my phone is blocked I've contacted the ombudsman who have requested a goodwill gesture from o2 of £50! For a service o2 dont provide 

[Elland2002]

As the sim only deal with o2 was part of the new tv package deal with virgin  media (volt I think its called) I cant cancel it as it will result in my tv package being turned off & probably a charge for termination of contract. Its 10 months now without a mobile phone bcoz of o2 & I'm nowhere near a resolution. I'd appreciate any potential Avenues to explore 

[Elland2002]

Any advice on how I continue to persue a resolution/compensation 

[Oxonian]

@Elland2002 

I think that I would be considering an alternative mobile network operator. 

[Elland2002]

I'm not sure if doing that will have an effect on my virgin media deal (& whatever the outcome keeping my number is paramount)

[Oxonian]

@Elland2002 

I don't have Virgin and so can't comment on that. 

There's not much point in bothering about keeping your mobile number if it hasn't worked for ten months. Yes, keeping your number is desirable but surely the first priority is to get something that works ?