public string SendOtp(int installmentID)
{
var uvm = Session["UserDetails"] as UserViewModel;
VerifyUser verifyUser = new VerifyUser();
verifyUser.msisdn = uvm.MobileNo;
verifyUser.OTP = verifyUser.GenerateRandomOTP(4);
string res = verifyUser.SendOtp();
//save otp to DB;
InstallmentDetail installmentDetail = new InstallmentDetail();
installmentDetail = _installmentDetailService.Get().Where(i => i.InstallmentId == installmentID).FirstOrDefault();
installmentDetail.OTP = verifyUser.OTP;
_installmentDetailService.Update(installmentDetail);
_installmentDetailService.SaveChanges();
return(res);
}
