Telephone number changing in header

I have noticed that the telephone number showing on the header of our website is changing to an incorrect number that is not connected to us at all.

When I go on to the website, the number initially shows correctly but then instantly changes to the wrong one. I have looked on colleagues’ computers and the number seems to show correctly on their computers. And if I use Safari (rather than Google Chrome) on my computer (Macbook pro) it also displays correctly.

I have looked at the coding for the header and it appears correct, as in the extract below:

{% include 'search-form' %}

Yet what I see on the website is as in the screenshot attached.

Is this something that might just be on my computer for some reason? I am worried potential customers are seeing the wrong number also.

Please help.

Thanks

Sorry I dont quite understand?

If you want the website address it is www.century-office.co.uk

Thanks

Not sure you’ll see this, but did you ever find a solution? The other person’s reply has been deleted, but I’m experiencing something similar on a client’s website and hoping I can find an answer.

Google ads - Call tracking shows dynamic numbers to new users to track phone calls - You can turn off call reporting on google ads >account settings and once the cache is empty, it should stop changing the numbers dynamically.

If you want to recreate the numbers changing, use a vpn, google search your business name - click google ad or search result and it should change the number as the tag manager sees you as a new user.