An elderly Greek couple, Mr and Mrs Kyrgios, with little understanding of written English or formal education, signed a guarantee and mortgage over a block of shops to the Commercial Bank as security for payment of the debts of their san's company. Their son was a property develaper and builder. At the time of signing, they were led ta believe by their son that the guarantee and mortgage were up to $50,000 and limited to sik months. They were also told by thein son that the