How To Write A Out Of Stock Letter . Apology letter for out of stock item. How you inform the customer will influence their reactions. Apology Letter For Out Of Stock Item Stocks Walls from stockswalls.blogspot.com I apologetically write this letter to inform you that due to the reason ______ (mention reason), i am willing to withdraw the shares that i bought in your company/ organization and have been maintaining since _______ (duration/ time). Your organization’s name and logo. Shashank shekhar, ceo and founder of arcus lending in san jose, california, says your letter should include all of the relevant information the lender asks for, presented in.