The parties concluded a written master agreement and four subsidiary rental agreements appointing Spring Forest Trading 599 CC as operating agent for Wilberry (Pty) Ltd t/a Ecowash’s mobile car wash units. All agreements contained non-variation clauses requiring cancellation to be in writing and signed by both parties. After the appellant defaulted on rental payments, the parties met and discussed four options, including cancelling the agreements and ‘walking away’. A series of emails followed in which the appellant accepted the cancellation option, undertook to pay arrears, and return the equipment, and the respondent confirmed no further legal recourse subject to payment of arrears. The appellant paid the arrears and returned the equipment, then continued operating using another supplier’s equipment. The respondent denied valid cancellation and obtained an interim interdict. The appellant appealed.