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 offers several channels for feed-back. The leading approach is with the "Write to Us" e-responses kind within the HDB website. This manner means that you can post issues or comments, and HDB will respond as soon as possible. For precise concerns inside your community, including cleanliness or maintenance challenges, the LifeSG app and OneService Application are advisable as they immediate suggestions into the appropriate authorities. HDB also has a temporary Setting up Provider Centre (BSC) for new flats to take care of rectification requests in the 1-12 months Defects Liability Interval. For basic inquiries, you can simply call the HDB Branch Assistance get more info Line at 1800-225-5432.