Very sorry to have wasted your time so long, due to the risk of your company's orders too big for us, after careful consideration of our company, we decided not to accept orders of your company, please understand
I am very sorry to delay you so long time, because your order risk is too big for us, after our careful consideration, we decided not to take your order, please understand
I'm sorry to delay you for such a long time. As the risk of your order is too great for us, after careful consideration of our company, we have decided not to accept your order. Please understand