Both kids attend a local mosque for classes in the evening. Me and ex are separated and he originally paid the fees but stopped paying last year. He refuses to contribute for half either saying CMS covers it. Now I have taken over the fees and have settled the arrears and pay monthly. Last week it was parents evening and he had the children that day so he attended. I have had mine on a separate day. Kids were a bit put out that they had to attend twice with each parent. Going forward would it be unreasonable of me to say to the mosque that I only attend parents evening since he doesn't contribute to the fees and have his contact details etc removed?