。。
I got stood up. Says we'll try again next week.
Literal
Last-minute-cancel got-[received-くらった] [nominalizer-の]. Next-week [to-に] carryover [hearsay-だって].
ドタキャン is a clipped compound net-slang/casual word from ドタバタキャンセル 'chaotic last-minute cancel,' now fully established in speech. くらう 'to receive / take (a hit)' is used for unwanted things one is subjected to — くらう with 雨, 大目玉, ドタキャン, all mean 'catch / get hit with.' 持ち越し 'postponement / carry-over' is a compound noun from 持ち越す 'to carry over.' だって reports what was said.