I worked in a supermarket but got unemployed. Since I couldn't find a new job my old university friend asked me if I wanted to clean some of the airbnb rooms he rents, and I accepted since I needed the money. I started with a house with 4 bedrooms, then I got another with 3 rooms. He pays me some money per room (7€ until last month, it's now 8€), nothing official, just a friend helping another friend. Usually I clean between 11am-3pm, also depending on the number of rooms we have guests in but now it's high season so the rooms are full with tourists.

He has two more houses (with 6 rooms in total) that he usually cleans. But last week he told he would need my help for something. At the time I thought it was something minor, and he finally announced last week that he was going to go on vacation to his grandparents' house and would leave me all the houses to clean. He didn't even asked me if I could or not, he just made plans and left me with all the work.

It's not the first time he goes on vacation but other times he had other people to clean his houses (also, he had two more houses at the time). Now I have 13 rooms in total, I usually clean around 4 or 5 everyday (we only clean when there are checkouts), in 4 hours, in 4 different houses far apart and I have to walk there since I don't drive.

Sometimes guests come later and I have more time to clean but I also have some other commitments during the afternoon like driving lessons (I'm learning to drive at 30yo after years of anxiety) and other work I occasionally do, so sometimes my cleaning gets more sloppy and one of these days I didn't check the fridge and it had bad food so one guest complained.

And then there's the issue of being responsible if anything wrong happens, which he never told me. If a guest gets lost, any problem in any house happens, any key gets lost, etc, I'll have to take care of it because apparently he didn't get anyone to take care of that, but he never asked me either.

I concluded that I can't deal with everything.

I know it's partially my fault but he left without giving me the opportunity to say no. Also he is very insistent and got mad once because I "ghosted" him because he kept insisting I had to clean an old airbnb apartment he had and I couldn't, so after two weeks of him pestering me and me saying no, I couldn't deal with it anymore and I stopped replying to him.

I don't know what to do, I'm very bad at confrontation and he went yesterday, if I tell him to come back he'll either won't come and I'll feel bad for the guests so I'll keep doing this or he'll keep insisting I'll do it or he'll get mad at me, but mentally it's too much. I feel like crying.

How can I tell him to come back, and pick up his work?

I did this post in the Advice subreddit and got advice saying that I should just stop doing this, which I agree, yet I feel like I can't say no because of my anxiety and my fear of confrontation. :( that's why I'm asking for advice here. Thank you!