There's no public info on a certain "hdb feed-back sort 1k 28" as this is simply not a regular HDB identifier. Nonetheless, HDB gives a number of channels for feedback. The most crucial system is throughout the "Create to Us" e-feedback sort about the HDB Site. This form allows you to post queries or suggestions, and HDB will answer right away. For distinct problems in your community, including cleanliness or routine maintenance challenges, the LifeSG app and OneService Application are advisable as they immediate suggestions into website the appropriate authorities. HDB also has a temporary Setting up Provider Centre (BSC) for new flats to take care of rectification requests inside the one-yr Defects Legal responsibility Period of time. For common inquiries, you could phone the HDB Branch Provider Line at 1800-225-5432.