编辑同志:前不久,河山乡农民王某不慎丢失一头牛犊。情急之下,他跑到本村村委会办公室,央求利用高音喇叭向全村村民广播丢失之事,并承诺如有人帮助找回牛犊。将酬谢人民币200元。同村村民董某听到广播后,次日即向王某提供线索,并帮助找回了牛犊。王某十分感激,但只表示请董某吃一顿,对酬金之事只字不提。董某十分气愤,向其索要,但王某仍然不给。请问王某应不应该兑现自己的诺言? Edit comrades: Not long ago, Wang Shan peasants Wang accidentally lost a calf. In desperation, he ran to the village office of the village, begged to use the tweeter to broadcast the village villagers lost, and promised to help recover the calf if someone. Will pay RMB 200 yuan. Dongmou villagers heard the radio the same day, that is, to provide clues to Wang and help retrieve the calf. Wang was very grateful, but only said that Dong asked a meal, nothing to mention the issue of remuneration. Dongmou very angry, ask for it, but Wang still does not give. Will Wang should not honor his promise?