Re: a 0333 number has appeared on my google ad which i know nothing ab
This is likely to be the Google Forwarding Number which is an optional Call Extension that can appear next to your ad.
With Forwarding Numbers Google provides a unique phone number that's displayed with your ads. If a potential customer calls this phone number, AdWords will route the call to your business phone number. You'll then be able to see detailed reports about calls generated from your ads.
This link will explain this in some more detail if you'd like to read any further.
Hope this helps!