Ajio — Unlawful blocking of my account

I am a regular customer at AJIO and use to order cloths. As the app allows return if the cloth doesnt fit i was returning the cloths if i have fit issue.
Recently after i made purchase of 20k plus ruppes my account was blocked by AJIO. I want to return the cloths which are not as per fit and allowed as per policy. This is a fraudulent practise the account was blocked with no intimtion no information.