(1) Unless otherwise agreed between the consumer and the trader, the consumer is not bound to accept delivery of the goods under a sales contract by instalments.

(2) Subject to subsection (3), if the trader makes a delivery of goods that are not in conformity with the sales contract (referred to in this section as "non-conforming goods") in respect of one or more instalments, the consumer may -

(a) if there are non-conforming goods in the first instalment of goods delivered under the sales contract, exercise the short-term right to terminate the contract under section 23(1), or

(b) in any other case, exercise the final right to terminate the contract under section 26.