Cannot complete verification due to inactive phone number.

[ChristosCh]

Cannot complete verification due to inactive phone number.

[kernowlass]

@ChristosCh 

You need to contact customer services to resolve any account specific issues.
Click help / contact bottom left of Paypal pages for options available for your country.

Or 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.