A banner for wellness brand Healthy has been erected outside what was until a week ago the Wan Chai branch of gym chain Physical Fitness, as complaints surged following the arrests of the Physical’s two directors after its abrupt closure. The banner said Healthy would only provide services for those who had purchased packages from Physical, and would not be responsible for “financial or contractual disputes” over last week’s sudden closure. Announcing that it was “temporarily” shutting down, Physical last Friday said that “new investors” had promised to take over the gym chain, assuring custom…