moto g power - Block / Unblock Numbers
Here's how to send unwanted calls directly to Voicemail for your moto g power.
If calls from a specific number go directly to Voicemail but you're still able to receive text messages, ensure the contact isn't set to automatically route to Voicemail by navigating: 
>
Contacts
> select the contact > Menu icon
> Unroute to voicemail
.Add Block
- From a home screen, tap thePhone icon
(lower-left).
If unavailable, swipe up on a Home screen to display all apps then tapPhone. - Tap theMenu icon
- TapSettings.
- TapBlocked numbers.
- TapAdd a number.
- Enter the phone number then tapBlock.Calls and messages from contacts or phone numbers added to the reject list are automatically ignored and the call is forwarded to Voicemail.
Remove Block
- From a home screen, tap thePhone iconIf unavailable, swipe up on a Home screen to display all apps then tapPhone.
- Tap theMenu icon
- TapSettings.
- TapBlocked numbers.
- Tap theRemove icon
to the right of the number you want to unblock.
- TapUnblock.