Lenskart — Rim got corroded with in 8 months

Purchased a 136101 Rose gold tortoise full rim from u r showroom on 02 Jan 2022
Within 7-8 months of its use rims developed corroded marks.
When approached to ur showroom at KHARDA STATION ROAD RAHARA Branch they said the same model is not available for replacement at u r warehouse, I have to choose another model for replacement which I refused.
Then my question is that how the same model is available thru online?
Is that not supplied through warehouse?
Whatever, I request you that please make necessary arrangements so that I got a fresh spectacles at the earliest.
Regards