My legal parking space used for 5 years was seized by an elderly neighbor from the next building, who blocked it with clutter and then poured cement bollards. Property management says they can't handle it. What should I do?

用了 5 年的合法固定车位，被邻楼老太强行霸占，放完杂物直接砌水泥墩，物业管不了我该怎么办？

A public trend signal observed across 1 source.