Bugged credit points dye

Well my problem for today is that I bought a "Noble Wise dragon king's mask" using my friend's account and mailed it to my character... I remodeled the WDK mask with a low lvl leather helm. I colored my Fenris set using the 5 pcs black dye that i have in my warehouse... The coloring of my set was successful and then I logged off and went to work this morning... When I logged in again this afternoon, the color of my set and mask was reverted to it's previous color which is "Gold". I thought there has been a rollback but when I looked in my warehouse my black dye isn't there and the WDK mask wasn't in my friend's inventory either. I checked the balance of my friend's credit points and it was still reduced by 500 credits. After that, I again bought a WDK mask using my other friend's credit points and mailed it again to my character and bought 5 pcs red dye using my own character since the dyes are non tradable. I again remodeled the WDK mask on a low lvl leather helm and colored it red using 1 extra red dye that i have in my warehouse... I also colored my Fenris set again with red.....The coloring was again successful... and I went hunting in DP with my legionmates...When we got back to Heiron I look in a private store to check what the vendor was selling and then I gor disconnected. When I logged in again... the color of my set again retured to color gold and the red dye I used wasn't in my inventory neither the WDK mask is in my Friend's inventory.... I just hope the people concered will have a response for this post... Thank you very much....