Hong Kong’s consumer watchdog has received dozens of complaints after Taiwanese rock band Mayday cancelled one of its coming concerts at Kai Tak Sports Park and replaced it with a new date later in the week, sparking frustration among fans – particularly those travelling from mainland China and overseas. The Consumer Council said that as of 1pm on Tuesday, it had received 24 complaints about the cancelled show – eight from local consumers and 16 from fans outside the city. The watchdog said the...