I resigned 2 weeks ago.

First, my manager left. I picked up 50% of his duties, while other 30% was picked up by the CEO. There's 20% they tried pushing on me that got dropped.

When I resigned, the CEO wasn't too shocked, and even said that he expected it. Not to mention that they didn't review my salary nor my job description for 1.5 years, so yeah, it was expected.

Anyways, now they're scheduling calls with me and my coworkers to discuss how to move forward. Then, they cancel them, then reschedule some, then leave me out of them. The other members of the management are pushing my colleagues to create a ton of tasks for me, instead of 1-2 bigger ones, so that they can track my performance. Just to give you some background, I work in marketing. When I joined, they had 200K visitors on their website per year. Today they have 2M. The results I've had are obvious, but besides my former manager, none of them have any experience or basic knowledge of marketing.

My colleagues are all bummed, some of them message me multiple times a day to complain, others have begged me not to mention them to the management, or not to mention what I've been working on, since they don't want to do the work that I did. It's a super small company, so we have a huge scope of things we work on.

I have no idea why I even agreed to stay a bit longer so that the handover is done well. I have no idea whether I should address their behavior or simply accept that I've been working with immature management for too long. Should I just push through, or speak up? I really feel disrespected and my colleagues aren't helping as well.