On 19 December 2008, the respondent's representative took two fuel pumps to the appellant's premises for repair. After examination, the appellant gave an oral quotation of ZAR 24,000 for the repairs. The respondent accepted and requested to pay in instalments of ZAR 2,000 per month, to which the appellant agreed. The pumps were repaired and collected on 30 December 2008. The appellant sent invoices for ZAR 9,000 and ZAR 15,000. The respondent paid ZAR 6,647 but refused to pay the balance of ZAR 17,353. The appellant issued summons claiming this outstanding amount. The court a quo absolved the respondent from the instance on the basis that the appellant had not proved the value of the spares and labour costs. The appellant appealed this decision.