At the my current job, I don't even have tickets just slack messages consisting of hey can you do this inset vague thing, and after asking for multiple clarific

At the my current job, I don't even have tickets just slack messages consisting of hey can you do this inset vague thing, and after asking for multiple clarifications to narrow the possible interpretation I start working on it. Guess what ? The last Big task/Project I had to do morphed into another one each time I reported that I was done for 11 times in a row, midway I just gave up mentally. And it all started with "hey can you do a small script to download some CSVs from this server"