Section 25A-31 - Consolidation and refinancing(a) A seller and a buyer may agree at any time to refinance an existing consumer credit installment sale contract or to consolidate into a single debt repayable on a single schedule of payments, two or more consumer credit installment sale contracts.(b) A refinancing or consolidation agreement must be in writing, dated and signed by the parties.(c) The refinancing or consolidation agreement may provide for a finance charge which shall not exceed the rates provided in G.S. 25A-15, with the amount financed being the unpaid time balance of the contract or contracts refinanced or consolidated, less the rebate provided by G.S. 25A-32. In computing the rebate to be credited to the previous time balances for purposes of this section, no prepayment charge shall be imposed.