Helzberg Diamonds Shops review: expensive resizing & refused $50 coupon from their survey

I had 2 rings resized that cost me over $200 which is ridiculous! I bought them at Americus Diamonds in Austin, TX which is a high quality jeweler & I only paid $50 per ring 2 years ago. I also had a coupon for $50 off $250 purchase for doing the survey & they wouldn't give it to me! She told me I had to spend that in merchandise alone & then tried to sell me a stupid stuff animal for $12.99 when it was obvious saving $50 was more important so I could buy my mom a gift for Xmas. Zales & Broodkeys are both having amazing sales, but not Helzberg, and they couldn't even give me $50 so what does that say about doing good business & satisfying the customer. I spent over $4k on my wedding ring, & 2k on my other ring, so think about that amount & tell me how $50 compares in comparison when they could have made more than that off of me as a future customer, but now since they had to be so damn cheap I will never go back and I will not recommend this store. Then I do the survey again to complain & the web site goes down just as I'm about to submit my survey. Then I come here & read all of these complaints, now I'm freaking as I didnt check my diamond as it has a serial number inside of it. So did I even get my diamond back? All I know is there are much better places out there and this isnt one of them.