"I am always thankful for your fast help…"

I am always thankful for your fast help and support.
There is a tiny thing I wonder. Often I am unsure if another word would suit better to describe what I am writing about or if there is a better academic expression. It would be helpful to get some comments if there were better suited synonyms or not or if you just have checked grammar.

"A professional and reliable service."

A professional and reliable service.

"Although Iam satisfied with your…"

Although Iam satisfied with your services, I cannot say the same thing for the last document I sent you and asked for your express service....not the same quality😒😒😒😒

"Servizio eccellente"

Ho sottoposto alla correzione bozze il mio romanzo, gia’ pubblicato in italiano e successivamente tradotto in inglese. Servizio tempestivo, massima disponibilita’ e cortesia. Anche il prezzo competitivo. Per me cinque stelle! ⭐️⭐️⭐️⭐️⭐️

"Excellent work"

Many thanks, the service was really fast and excellent.

"All of my reviewers had some negative…"

All of my reviewers had some negative feelings about language in article, fortunately after a few checks everything went fine and article has been up.

"High quality and delivered on time"

High quality and delivered on time. Very happy.

"the magazine criticized the english and…"

the magazine criticized the english and corrections...the magazine itself redid.

"Very detailed"

Very detailed, informative and accurate proof reading delivered in a polite and friendly manner.

"I have asked that my references to be…"

I have asked that my references to be formatted according to a journal and it was rejected by the journal. proof reading survice didn't format the references nor notified me