TIER 1 General Extension ILR

Hi
Me and My dependent went to Croydon PEO on Monday 24October.
The case worker put my case on hold requesting for some more documents to consider my case.
Documents Requested are as follows.
1) For Tax year 2012/13 and 2015/16 please provide contracts and invoices with your clients.
2) Evidence of how you advertise your business.
3) Communications you have had with clients, contracts and for advertisements for your business.
in 2013 in had extension and that i just submitted the business/personal bank statement, dividend vouchers and accountant letter.
recently my laptops hard disk crashed and i lost all the client data for 2012/13.
the all other things i can provide them.
What shall i do in this case? please suggest.