This is the 14778th most frequent Russian word.
плате
The Russian word "платье" means "dress" in English.
In this sentence, "платье" means "dress" and "о новом платье" is in the prepositional case, indicating a subject talked about.
Я написала рассказ о новом платье.
I wrote a story about a new dress.
Here, "плате" means "payment," used in the prepositional case to specify details regarding „плата за воду“ (payment for water).
В счёте обнаружились ошибки в плате за воду.
The bill showed errors in the payment for water.
In this context, "плата" refers to "payment" or "compensation" and is in the dative case functioning as the object receiving the refusal.