The Buy-Back feature was put into place by player request years ago due to being able to literally sell ANYTHING bypassing the prompt when you press and hold ctrl and spam click.
If you sold more than 30 items...well...I would advise you (as a friendly gesture) to LITERALLY CLEAN OUT your inventory. If you have too many "perms"...well, better go buy a few 30d bags and shuffle all that stuff OVER to the other side of your inventory.
I know quite a few players that lose their marbles because they accidentally sold something of great value...or have been out farming like mad...only to later discover that HEY...MY INVENTORYS FULL OMG!...just to come back and find it globally looted...and it be something godly
So...pray they help...but don't get your hopes up.
Keep your inventory CLEAR...and keep all important items AWAY from your disposables and consumables...
Oh and...for the love of all that is unholy in fiesta's eyes...request the Iron Case Bogo to come back.
Thanks for your comment. I have received reply from the CS, but they cant recover my item... luckily i had around 110 coins so i dont need much to make a new1...
I have full perm inventory cases, i will be more carefull in the future...
Thanks for ur advise tho.