No idea if its free in your country but this is the only way to get the correct number.........
Click on the words "Help / Contact" at the bottom of paypals pages and use the phone option in the blue band at the top OR very bottom of page dependent on what country you are in. Scroll down past the list of help questions and click on 'Call us' bottom of that page. Log in and get the code.
have you considered contacting Customer Service via Facebook or Twitter?
You can send them a personal message from their facebook or twitter pages.
It's: https://www.facebook.com/PayPal and @AskPayPal for Twitter.
Advice is voluntary.
Kudos / Solution appreciated.