Inappropriate Feedback From Ebay Store.

I have been buying from an ebay store.Even though the store has delivered good quality products and their service is very good,the only complaint I have its their inappropriate feedback. I pay with paypal on each transaction. This is what their feedback says each time:

 

"Thank you for your order."

 

Thats all they put.Every time I've bought from them thats all they've said. I did contact them twice to bring it to their attention.No change in their feedback. I started giving them similar feedback:

"Thank you for my order".

 

What should I do?

Thanks.