Ring Return with Tag

I bought a blue and white diamond ring from Gems TV and they say that they have a 30 day money back guarantee if you leave the tag on it. They also tell you to wear it and see if you like it. Well I wore it for a few days and sent it back before the 30 days with the tag still on it and I find a return and it is them sending it back to me because the tag is worn. I have bought numerous items from them since last August and I am a valued customer ordering from them all the time...I am very upset with them that they sent the ring back to me knowing that the ring is unharmed. Now they are loosing a good customer.....