really thanks, can u please suggest me what shud i give in subject and how to say them ? i am not a professional in typing letter

so i will have some kinda idea...
i have see the email on there site that show is
[color=rgb(68,68,68);font-family:arial, sans-serif;font-size:small;]For any technical assitance please e-mail at helpdesk.delhi@[/color]
bol[color=rgb(68,68,68);font-family:arial, sans-serif;font-size:small;].[/color]
net.in[color=rgb(68,68,68);font-family:arial, sans-serif;font-size:small;] or Call to 1504[/color]
[color=rgb(68,68,68);font-family:arial, sans-serif;font-size:small;]so what email shud i use ?[/color]