False advertising

I bought a wedding ring today at your store on longbeach.. This size is to small.. I was told by the staff that it will b sent away to made bigger.. It's has 3 bands and I was told I would be charged for each band to be made bigger.. This is false advertising as I paid for the ring and why should I now pay to have it made bigger.. Im very unhappy with the assistance I got as I do think it's unfair that after purchasing the ring to be told I have to now pay for all 3 bands to be made bigger