public ActionResult <List <Object> > GetReport([FromQuery] string option, [FromQuery] int year, [FromQuery] int month)
        {
            IEnumerable <Object> res = null;

            if (option == "annual")
            {
                res = _customerService.Accept(new AnnualReportVisitor(new DateTime(year, 1, 1), new DateTime(year + 1, 1, 1)));
            }

            if (option == "monthly")
            {
                int endMonth = month + 1;
                int endYear  = year;
                if (month == 12)
                {
                    endMonth = 1;
                    endYear++;
                }
                res = _customerService.Accept(new MonthlyReportVisitor(new DateTime(year, month, 1), new DateTime(endYear, endMonth, 1)));
            }

            if (res == null)
            {
                return(BadRequest());
            }
            return(new List <Object>(res));
        }