Importing Excel File Into Database

Hi, I am very new to ssis, I am trying to set up a package that I can set to run every hour or so, what it will do is look for all excel files in a certain folder and import them into a table on an sql server.

I managed to get it working but my problem is that my data is survey answers and some columns contain a comment.
I get these files on a weekly basis and some weeks the length of the longest comment makes ssis want to use a different data type for the comment column (sometimes it wants DT_NTEXT, other times it wants DT_WSTR).
as this column is filled out by a human I guess aposrtophies and other characters may affext this as well.

when I made the data flow task, I used the wizard on a file which contained about 8 weeks worth of data. when I use 1 weeks worth of data where the comment length is very low, the task gives a validation error saying the metadata is out of sync. if I go back and set the data type for that column to DT_WSTR and rerun the task, it works but then when it tries to process a different weeks worth of data it will fail again

here is an example of an error I get when it thinks the data type is wrong.
[Source - 'raw data$' [1]] Error: The output column "Question ID50# (Verbatim)" (439) on the error output has properties that do not match the properties of its corresponding data source column.

I played around with the data types for a while and managed to get it to process the first file and then try to process the secondfile, in the second file it got around the validation but then got this error:
[Source - 'raw data$' [1]] Error: Failed to retrieve long data for column "Question ID3# (Verbatim)".

is there a way to make it recalculate the data types by itself for each excel file?


I am stuck trying to figure this one out.
sorry if I havent provided enough information, I am not sure which direction to head with this