Bad service and moneys taken for "insurance"

My husband bought home appliances from Game on account. The account should have been settled early in 2018 already ( Game even gave him a December 2017 payment break just to take extra money in any case in February 2018) - yet payments still went off his bank account every month for R139.37 in March 2018 which then reduced to R135.69 in April and then shot up to R156.46 in May 2018 after which the same amount went off for May to August 2018 to reduce to R152.45 from October 2018 to June 2019 and then reduced to R127.56 in July 2019 with another reduction in August to R53.09. Upon queriyng these amounts my husband was informed that it is insurance for the appliances which he agreed on. Up to date after numerous requests for the contract where my husband signed for the insurance no contract was sent and also no Supervisor from Game phoned back even with promises of feedback and call back.