PL/SQL :: Timestamp With Time Zone

will Import into a table I am getting the below error message Error Message

Record 1: Rejected - Error on table MTN_BUNDLES_EXPIRY_MIG, column EXPIRY_DATE_T.

ORA-01840: input value not long enough for date format The data client provide in .XLs file  2013-08-31 17:14:56My Table Structure is  

CREATE TABLE tmp_mtnuga_3g_expiry_mig
(
    MSISDN_V            VARCHAR2 (50),
    expiry_Date_t         TIMESTAMP(6) WITH TIME ZONE
    status_date_t          TIMESTAMP(6) WITH TIME ZONE
    GOT_STARTER_PACK_V  NUMBER(10)
);

I am using 2 option to import into a table First option using Toad ---> Import Table -- option here i am getting error likeThe format is not matched.Second option using SQL Loader-->

LOAD DATA
INFILE 'D:ssTT-ProjectsCustomer AppsClient Dump3GBundle.csv'
BADFILE 'D:ddTT-ProjectsCustomer AppsClient Dump3GBundle.bad'
DISCARDFILE 'D:ddTT-ProjectsCustomer AppsClient Dump3GBundle.dsc'

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how solve the TimeStamp