Thank you for the replies.
I sent out a group text to those that owed for more than a week, a payment reminder asking as it was the last banking day of the month, could you please settle your window cleaning account. This customer is normally pretty quick but life gets in the way and she sometimes needs a reminder.
3 out of the 4 that were sent the text have paid, she hasn’t, but I’m sure she will.
Occasionally she forgets the gate, has been charged 2/3 rds and one time paid the full £22. Probably not read the invoice on that occasion.
So I was surprised she questioned the invoice.
Must be getting a bit tight in that household.
I asked her in the text what she wanted to pay to get her to think about it. I would have, within reason accepted what she offered.
After many years of service to her I don’t think she connects her payment being my income. I don’t think many do. So while the £15 covered my costs with some profit, my earnings on that job were down