from tnzapi import TNZAPI

client = TNZAPI(
    Sender="YOUR_EMAIL_ADDRESS",      # API Username
    APIKey="YOUR_API_KEY",            # API Key
)

request = client.Send.Voice(
    Recipients = ["+6491231234"],     # Phone numbers to call
)

""" Message to play - WAV format, 16-bit, 8000hz recommended """
request.AddMessageData("MessageToPeople","D:\\voice.wav")

response = request.SendMessage()      # Send Voice Call

print(repr(response))