Avoid calling back the phone number +37270066330. There have been several reports that this number is being used as part of the Wangiri scam in which victims are connected to an international premium rate phone number. You won’t be charged because you receive the call. The scam only works if you phone the number back

In this case the Wangiri scam is associated with the code for Estonia, which is +372. However, the number +372 7006 6330 is actually an international premium rate number. These types of number can be purchased from anywhere in the world. Whatever the location this call is coming from do not phone it back.