Python Skype bot won't send messages sometimes

Question

I've started coding a Skype bot as my first Python project. It works pretty well when it actually sends the messages, but sometimes it completely doesn't send a message. I'm not sure if it's because of me writing it poorly or because of my Internet connection.

botfuncs is the one that usually fails to send a message in my code:

def botfuncs():
    def OnMessageStatus(Message, Status):
        if Status == 'RECEIVED':
            c = Message.Body
            if Message.Body.lower() == "time":
                client.SendMessage(Message.FromHandle, "The current time is {0}".format(time.strftime("%Y, %b %d, %H:%M:%S.")))
            elif c[0:4].lower() == "sudo":
                client.SendMessage(Message.FromHandle, c[5:])
    client.OnMessageStatus = OnMessageStatus