Data Set with multiple dates - needs calendar pivot table

[MiniFi]

Hi,
I've got a data set that looks like the below
Listing

Company	Listing 1	Listing 2	Activity a (1)	Activity b (1)	Activity a (2)	Activity b (2)
Dan	Dan's CDS	Dan's Books	Jan 30	Feb 12	April 9	Jan 20
Bob	Bob's DVDs	Bob's Plates	Jan 2	March 8	Jan 2	Jan 30

<tbody>
</tbody>

I would like to be able to create a table from this data set that looks like the below:

	Jan	Feb	Mar	April
week 1	Activity a / Bob's DVDs Activity a / Bob's plates		Activity B / Bob's DVDs
week 2		Activity B / Dan's CDs		Activity A / Dan's Books
week 3	Activity B / Dan's Books
week 4	Activity a / Dan's CDs Activity B / Bob's Plates

<tbody>
</tbody>

The data set is exported from a web program so I can make adjustments but I would rather keep these to a minimum where possible. I've worked with simple tables and pivot tables before but I just can't get my head around how to achieve this.

Thank you!