Ungrateful ?

Today I took my two grandchildren out for the day my son dropped them off at 9.45am.

We did loads, we went to the book shop, we went to the park and had ice cream and lunch. We also bought some small toys and a magazine.

The day out cost around £55

My son called at around 5pm and said he was on his way to pick them up

When he came he was fine at first then he said I thought you were only going to have them for an hour..

Oh I said, I didn't realise you wanted them back early, if you had asked me to bring them back at a certain time I definitely would have done that, we must be more organised next time

As I said that he went off on one saying don't blame me I didn't get it wrong, you fodnt say you were going to have them for more than an hour he became confrontational.

At that point I stopped the conversation because there's nothing I hate more than adults arguing in front of children

What did I do wrong ??

Was he right to be angry at me

Hpw I see it.. I just want to say that in my opinion he really needs to get some respect for me I was crying only yesterday about how un happy I am right now and how fragile I was feeling so I felt ghat his behaviour with me was Cruel

But so interested in seeing what you all think