Tanishq — Finger Ring

I bought a finger ring from tanishq but they are not providing the services properly i want to make a order for new ring but employee of the tanishq instead to give this option they just modified my ring.

At the time of modification they told they will add extra gold but they didn't add any gold they just enlarge the ring without our concern.

Before modification they told they will some mg gold will loss but it is loss more that that and they told me it can't be exchange.

At the end I have to buy that ring but I can't wear that ring because they didn't provide the perfect finishing