Weddingbee boards

When i went to order my dress the lady said that i should get a size 8, but i told her i was still losing weight from having a baby 5 months prior. So i asked if we could get a 6 since im usually a size 4. She insisted that i get an 8 and it finally came in and now it's two dress sizes too big and has a stain on it! Will bringing in a mermaid style wedding dress two sizes ruin the shape of the dress????

When i pointed out the stain she acted like she didn't see it, then rubbed it and made the dress look dirty all around the stain. She then said i have stuff to get it out, the seamstress sprayed something on it, but it didn't work. They then tryed again and it faded the stain but i can still see it! Even if the stain isnt that bad now the dress still looks dirty and touched. She said that what they could do is since its on a front seam that they could take it in a 1/4 inch so the stain would completley be removed. I just don't trust them anymore and don't want to take a chance with them! They didn't even apoligize and said the dress came in with the stain(i doubt it). Am i making a big deal out of nothing? I wasn't rude and said nothing negative towards her but i wish i did! Maybe i would've gotton something done about it.