LOST PHONE-CONTACTS AND WHATSAPP

Hey guys,

So my problem is a little bit complicated.
I lost my phone about a month ago. My whatsapp was using my Spanish number but when I lost my phone I had a Greek card so fortunately the sim card was not lost. Now that I bought a new device and I try to add my whatsapp account using my Spanish sim card I cannot receive the confirmation code, I suppose because I currently don't live in Spain and the card is not charged. Is there any way to solve this problem?

Thank you very much,
Stella