Photo copies of telephone bills as evidence

sir, my father works in a nationalised bank and is provided with landline phone at home and office. as a evidence , we want to file the call records. but we only have the photocopies with us as originals are kept in the bank records for audit purpose. till now we didnt tell any of our father's colleagues regarding my marital life distress. so how to file them as evidence. they are the key evidences to show our efforts to reconcile and all.