No good deed goes unpunished

I agreed to cat sit for someone for a full month. Which is already a big mitzvah. But this motherfucker made it so much harder. 

1st, he gave me the wrong phone number. How hard is it to give someone your correct phone number?? 

Then, even though he knows I got home in the middle of the night, he still insists on bringing the cat over 1st thing in the morning on a holiday. 

3rd, once he gets to my apt, he says he "forgot" to buy catfood. So I'm doing this huge favor, but I have to go out and buy the food because he "forgot." Grocery stores are open at 8:00 in the morning, just saying.