Sorry for your loss OP.
I think he raised a very valid point, google phone number of Coinbase will come back a fake one. And the fake one will steal your coin.
This.
Don't use Google!
The ads a the top tend to be phishing sites, and in the search results they tend to also list scam sites. You are safer bookmarking login urls, rather than googling and automatically clicking what is at the top (which is sometimes the site you want and sometimes a phoshing ad).
Coinbase is also at fault - they should have listed their phone number on their website, so OP didn't have to google.