Shriram Chits — Chit issue

I joined a 10 L chit with Shriram chits with TNagar branch during July 2021 and paid Rs 22200 on 24 July 2021 and Rs 20000 on 06 Oct 2021. So far I have not received any update from the branch even after several calls. When contacted the branch manager he said this particular chit has not been registered.
My question is, if not registered why did they get money from me??
I want proper response or I want my money back with interest.