We're not quite sure how this one works, but the scam is usually to take control of your account or your Instagram somehow so beware...
The text comes in from 07708042689
Hi Mum, I'm using a friends phone can you message this number on whatsapp please 07564674113 xx
Both numbers appear unable to receive calls but the number must be important in some way in order for the scammers to get your WhatsApp or other accounts...
Any ideas please let us know.