Tread + Miller - Poor Customer Service

About three weeks ago I returned shoes and they never sent an confirmation that they received my return. A week ago I phoned the so called customer care center and was told that they haven't received the parcel from the courier. Few days of nagging with multiple calls and emails, they asked for my banking details and ID, I asked the reason for my ID and was told for verification. So I send through the required documents and still being asked to send through the same things since Monday 28th of June 2021.They do not care about their customers and their business reputation .Am sick and tired of this , that my hard earned money I have to work for it again.