My business is in the red and if it doesn't improve soon, I will have to close.

I have a lot of fear and trepidation that I will have the same outcome that I had last time.
前回と同じ結果になるのではないかという大きな不安と動揺を抱えています。

I think there are some of those in stock, but I will have to check.
いくつか在庫があると思いますが、確認します。

If you don't give me a refund within a couple of days, I will have to file a dispute.
2～3日以内に返金していただけない場合は、裁判所に異議申し立てを行います。

My business is in the red and if it doesn't improve soon, I will have to close.
私の商売は赤字を出しており、すぐに好転しなければやめざるを得なくなる。