[Translation from Japanese to English ] Of course I know we cannot make promotional code combined. What I would like...

Original text

promotional codesをcombined出来ないことはもちろん知っています。
私が伝えたいのは、以下のpromotional codesが単体でも使えないということです。
私は20%off以上のDiscountは求めていません。

私は長年に渡り御社のweb shopで20%offで多くの商品を購入してきました。
アカウントを確認してください。

今使用することができる20%offのpromotional codeを教えて下さい。

以下注文の20%off分を返金して欲しいです。

Translation / English

Of course I know we cannot make promotional code combined.
What I would like let you know is the fact that following promotional code is not available even in stand alone.
I am not requesting discount more than 20% off the price.

I have long purchased items with 20% off price at your WEB site for many years.
Can you please confirm my account to review the purchase history?

Please tell me the 20% off promotional code which is currently available?

I would like you to make refund of 20% of the price for the order below back to me.

Translation / English

Of course I am aware that promo codes cannot be combined.
My point is that the following promo code itself cannot be applied alone.
I am not expecting a discount more than 20%.

I have long purchased products from your web shop with 20% discount. Please review my transaction history.

I would like to know the promo code for 20% off available at the moment.

Please repay 20% of the following order:

Translation / English

Of course, I know that promotional codes can't be combined.
What I want to tell you is that the below promotional codes are not unavailable for just alone, too.
I don't want Discount of 20%off and over.

I had purchased a lot of products on your web shop as 20% off for a long time.
Please confirm an account.

Please let me know 20%off promotional code that I can use right now.

I want you to refund the money of 20% off of the below order.

Translation / English

I definitely know that the promotional codes cannot be used in combination.
What I'd to state is that the following promotional codes cannot be used even singly.
I am not asking for a discount more than 20%.

For a long time I have been purchasing many products from your company web shop at a 20% dicount.
You may check my account for confirmation.

Now please let me know the 20% off promtional code that is viable.

I'd also like to receive the refund amounted to 20% of the following purchase.

Translation / English

Of course I am aware that promotional codes cannot be combined.
What I want to tell you is that the following promotional codes cannot
be used by themselves.
I do not ask for any discount more than 20%.
I have purchased a number of goods with 20% off on your website
shop for a long time. Please confirm my account.

Please notify me of the promotional code that is 20% off.

I would like to get refunded for the margin of 20% off.