I have also seen this issue caused by landscapers when a bed is along the building not pitched properly causing it to retain moisture from mulch or other especially if roof drains are present.
To me this looks like there is a high content of moisture In the soil and frost has heaved the cmu causing the joints to shatter and push the blocks in, must likely not reinforced vertically or horizontally. Cores not filled correctly. Can be repaired by supporting the structure above, which...
