Unique pets are replaced

I logged into the game after the server maintenance on February 27th and found that my level 80 hunter pet ghost wolf in icecrown was replaced by a level 77 ravager. This was incredible. I asked the GM in the game to help me restore the ghost wolf pet. Give it to me. The reply turned out to be "Unfortunately we do not refund or exchange any items or currencies" My account Join date: February 17, 2014 This unique pet has always been my pride. Many friends envy it. I had it before this server maintenance. Unique pets, please admin help me solve this problem.