Here’s a vb script snippet that I have used to send Telegram message in a group from an Excel sheet.
Sub sendTelegramMessage()
Set objHttp = CreateObject("MSXML2.ServerXMLHTTP")
' Change these accordingly
strChat = "<chat_id>"
strText = "*Test*\r\nThis is a message"
strUrl = "https://api.telegram.org/bot<token>/sendMessage"
' Leave these alone
strMode = "markdown"
strJson = "{""chat_id"": """ & strChat & """, ""text"": """ & strText & """, ""parse_mode"": """ & strMode & """}"
objHttp.Open "POST", strUrl, False
objHttp.setRequestHeader "Content-type", "application/json"
objHttp.send strJson
End Sub