(a) In an action initiated by a debt buyer, no default or other judgment may be entered against a debtor unless business records, authenticated through a sworn declaration, are submitted by the debt buyer to the court to establish the facts required to be alleged by paragraphs (3) to (8), inclusive, of subdivision (a) of Section 1788.58. (b) No default or other judgment may be entered against a debtor unless a copy of the contract or other document described in subdivision (b) of Section 1788.52