Healthifyme App — Not refunding my full money

Website: apps.healthifyme.com/accounts/login

I have enrolled myself for premium plan and paid rs.4680/- on 02/08/2020, i was told that if i am not satisfied in one month i will get my full money except rs.750 that is their processing fee and i said okay.
I paid on 02/09 but my programme started from 04/08/2020 and i sent mail for discontinuation on 03/09/2020, since my progame started on 04/08 they should refund me whole amount but these guys are deducting my 50% hardearn money..

Also note in between on 17/08/2020 also i have sent dicontinuation request but they only changed the coach..

I need my money back from them rs.4680-750=3930/-... Their customer support on [protected]@healthifyme.com or[protected].. Pic mr. Sarath nair..