curl --request DELETE \
  --url https://api.voicebot.studio/api/v1/phone-number/{phone_number_id} \
  --header 'X-API-Key: <api-key>'

{
  "id": "<string>",
  "provider": "<string>",
  "number": "<string>",
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z",
  "name": "<string>",
  "assistantId": "<string>",
  "squadId": "<string>",
  "fallbackDestination": {
    "number": "<string>",
    "type": "number",
    "extension": "<string>",
    "callerId": "<string>",
    "message": "<string>",
    "description": "<string>",
    "numberE164CheckEnabled": true
  },
  "serverUrl": "<string>",
  "orgId": "<string>"
}