No data service, temporarily not offered by the mobile network at your location

[Nav]

At my house and recently at my work place I am keep getting a repeated notification that says "No data service, temporarily not offered by the mobile network at your location." It only happens at my house and work place, no where else, and the notification is coming through even some times on repeat every 30 seconds. My data works just fine, it's just a notification.
I contacted O2 online guru last week I have been told to "reset the network" .....just waste of time.
Then I rang to O2 customer Services. They rang me back and keeping asking me same details which I have already told them in the start when I did chat with online guru and then over the phone.
This is intolerable, I have to keep my phone on silent !!!!!
I have two accounts with O2 and I am using two seperate handsets, Samsung S9 and Samsung S7 Edge so it can't be the handsets!! please someone provide a solution. 

[Anonymous]

@Nav You have to persevere with customer service. They can turn off service notifications 

[Nav]

Thanks for your comment but as I have mentioned in my post that I have contacted O2 Customer services online last week and then rang them as well. But they haven't helped me out. That's why I have shared my concerns on this platform.

[Anonymous]

@Nav This is a customer community forum. We are not customer services. We have no access to accounts. You need to follow my advice above

[MI5 · Accepted solution]

It's a network fault which needs escalation to technical services.
Download the My network app to report it.