Can I reclaim money paid to CSA as I have children more than ex?

My children live with their paternal nan. I pay csa out of my benefits which is 10 a fortnight. Has been like this for a few years now ..

but im gong through court to get them returned to me. (please note no reason for them to not be at mine eg no child protection , no alcahol drug subtance abuse criminal record violence etc..which is what pople assume…. i was just young .) Anyway I have had them EVERY WEEKEND and HOLIDAY since !! yet i still pay child support and provide for them and not get a penny towards them eg food electric clothing activities . I am on jobseekers only for myself and live alone during week. I give them pocket money and money for trips , trainers , whatever i can afford and i go without .

This is what a mum does so i do not complain.

Even though she claims all the benefits and does not provide them suitable clothes food etc and spends on herself.

I heard that if you have the children more than 26 nights a year i do not need to pay this?????

Please note she does not ask her SON to pay his share of the child mainenence !!Even though he never sees them!!

Yes its a small amount and I do not mind paying . But I find that its the principle that the extra could be going on them which i assure you it is NOT while going to her.

Can I reclaim any maintenance paid to her on the grounds that i have them more than she does as a childminder is not her lol so I can treat my children to holiday or even do up their room here lol as it must be reaching the 1000 overpaid to her at this point now lol

Thank you