public async Task ExecuteCommand(string chatId, User userJoined, User userLeft)
        {
            var keyboard = new ReplyKeyboardMarkup(new[]
            {
                new KeyboardButton(BotCommands.AndroidApp),
                new KeyboardButton(BotCommands.IosApp),
                new KeyboardButton(BotCommands.Return)
            }, true);

            var msg = await _messagesService.GetAppMsg();

            await _telegramBotClient.SendTextMessageAsync(chatId, msg, ParseMode.Default, false, false, 0, keyboard);
        }