A NATHAN Road salesman who helped threaten and badger a tourist and kept her in his shop for more than six hours until she agreed to a purchase failed to get his conviction quashed on appeal in the High Court. But Mr Justice Ryan allowed Chan Wing-kam's appeal against sentence and reduced the four-month prison term to three months. The judge agreed with the trial magistrate that the tourist was treated in an atrocious manner and the actions of Chan and his colleagues were to the detriment of Hong Kong's image as a tourist centre. However, said the judge, while the crime warranted an immediate custodial sentence, greater credit should be given for Chan's clear record. Chan, 27, had denied a charge of criminal intimidation but was found guilty after trial by Magistrate Bina Chainrai. The court heard Maria De Lourdes De Camargo Vidigal went into the Amigo Photo and Audio Supplies in Chungking Mansions, Tsim Sha Tsui, on May 12. There were about seven salesmen in the shop including Chan. She tested out a video camera which cost $3,800 and decided to buy two. She signed two credit card vouchers for the pair before she was told the camera was out of stock. Sales staff added that it would only work in Hong Kong and not in her home country of Brazil. The salesmen showed her a more expensive model and tried to persuade her to buy it. She insisted on the original. Staff continued pressurising and badgering her until she reluctantly agreed to buy another model at $7,800. They still would not let her go, saying that because she had signed two vouchers, she had to buy two items. On Chan's signal, one of the salesman threatened to break the camera Ms Vidigal had just bought. He snatched it from her and threw it to a colleague who dropped it. The box handle was damaged but the camera remained intact. Ms Vidigal gave in and bought a ''Game Boy'' at $950 before staff let her go. Chan's counsel on appeal, Duncan Percy, submitted his client did not utter any threats. He said if Chan was found guilty on the basis of being an aider and abettor, the Crown should have made that clear from the beginning. Arguing that the sentence was excessive, Mr Percy said Chan was not the one who initiated the incident but came on the scene later. While Chan's role in the threats and badgering was an aggravating feature, it was wrong for the magistrate to impose an immediate custodial sentence on a first offender, counsel said.