HI Minioha
When you submit the PIP form, a message comes up telling you that the form has been submitted and that you can download your form in a PDF format. Included in that message is a reminder to claimants that it is their only opportunity to download the information. If you're saying that the message did not appear, I'm afraid it is an issue that you will have to raise with the DWP and see if they send you a copy of your form.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
