I'll tell you the background and you tell me who WBU, please.
I make cakes - fancy iced ones for birthdays, etc.
I was asked about 3 weeks ago for the price of one of those princess cakes with the doll stuck in the top by someone who I would call an acquaintance rather than a friend. I know her, socialise with her a bit but she's quite a 'tricky' person to get along with and she's fallen out with 90% of the people in our larger group of friends in the last 5 years for various reasons, all caused by things she has said/done.
Anyway, I told her and she clearly didn't want to pay my prices (I don't mind, I wouldn't 
but plenty of people do) so I explained how she could make it herself because they're not overly hard. She said she'd do that and we said no more about it.
On Tuesday she collared me on the school run and asked me if I could do it after all. The party was this afternoon, after school.
I said I had 3 more cakes to do for this weekend but I could squeeze it in if she could get the doll as I knew I wouldn't have time to go shopping for it myself. She told me that she already had the doll so she'd drop it over to me that day so I agreed to do it.
She hadn't dropped it off by the end of school but at pick up she promised she would bring it over that evening.
She didn't, but promised again on Wednesday morning that she'd bring it to the house. She hadn't dropped it off by 3pm so I text her to say I really needed it, couldn't do any more to the cake until I had it so could she bring it to pick up.
I got no reply and she wasn't at pick up so I text her again at 6pm, reiterating that it was becoming very urgent that she brought me the doll or I wouldn't be able to do the cake.
Again, no reply and she hadn't brought it by 8pm so I FB'd her a message as it was the only other way I had of contacting her and again explained the urgency and asked her to bring it round before 8:30 as otherwise I couldn't do it. She's on FB every day so I assumed she would pick it up.
I finally got a reply in the morning, a text which had been sent at 11pm saying how sorry she was, how the doll had been on the table but she'd been waylaid (I live a 5 min walk from her, 1 min drive and our dcs are in the same classes) and please say I could still do it.
As it was less than 2 days to the party and I had to get started on the cakes for Saturday and Sunday's clients I had no time left. Wednesday night was the night I'd put aside to do hers because I couldn't start the others that early.
At school drop off on Thursday she rushed up to me with the doll saying how sorry she was, please would I still do it and which point I had to say no.
She then told me that I'd let her down, that she hadn't got my texts because she hadn't had her phone with her, that I'd ruined her daughter's party, etc.
I explained that she'd been promising to drop the doll over for 2 days, that when it became urgent I tried to get hold of her using both contacts that I had for her and if she couldn't be bothered to find 5 minutes to bring me the doll then I really wasn't to blame.
She was adamant that it was my fault and I should have done more to contact her, I feel I did what I could and my friends agree but none of them get on with her so they aren't exactly impartial.
What do you think?