def rules(sender_id, message):
    user = User.select().where(User.user_id == sender_id).get()
    oferta = Oferta.get(Oferta.oferta_id == 1)
    if message.text != bs.back:
        if message.text != bs.accept:
            if re.match(r'^((8|\+7)[\- ]?)?(\(?\d{3}\)?[\- ]?)?[\d\- ]{3,10}$', message.text):
                user.mobile = message.text
            else:
                bot.send_message(sender_id, bs.mobile_error)
                return False
        else:
            order =SentOrder.select().where(SentOrder.user_id == sender_id).order_by(-SentOrder.order_id).get()
            user.mobile = order.mobile
    markup = types.ReplyKeyboardMarkup(resize_keyboard=True)
    agreement_button = types.KeyboardButton(bs.agreement)
    back_button = types.KeyboardButton(bs.back)
    cancel_button = types.KeyboardButton(bs.cancel)
    markup.add(agreement_button)
    markup.add(back_button)
    markup.add(cancel_button)
    bot.send_message(sender_id, bs.rules.format(oferta.link), reply_markup=markup, parse_mode="Markdown")
    user.step += 1
    user.save()