Making a letter head for certificate page of thesis - latex

Question

I am trying to make a letter head to make a certificate to put in a thesis. I have posted the MWE below.
There are 2 issues I need help with
The cell alignment of the letterhead, is not proper. I am not sure how to correct it.
I need the double lines to be in red colour, I wasn't able to get it.
The final output should be something like this image
enter image description here
\documentclass[12 pt,a4 paper]{article}
\usepackage[top=1cm,left=1in,right=1 in,bottom=1in]{geometry}
\usepackage{times}
\usepackage{graphicx}
\usepackage{marvosym}
\usepackage[onehalfspacing]{setspace}
\usepackage{tikz}
\usetikzlibrary{calc}
\usepackage{fancyhdr}
\usepackage{xcolor}
\pagestyle{fancy}
\usepackage{multirow}
\fancyhf{}
\noindent
\makebox[0pt][l]{\rule[.7ex]{\linewidth}{#1}}%
\rule[.3ex]{\linewidth}{#1}}
\begin{document}
\pagestyle{empty}
\vspace{12 mm}
\begin{tabular}{c c c}
\multicolumn{1}{r}{{\Large Bangalore}} & \multirow{1}{*}{\includegraphics[width=0.175\linewidth]{BUB_Emblem}} & \multicolumn{1}{l}{{\Large University}}\\
%\multicolumn{1}{r}{\Huge{Bangalore}} & \multirow{1}{*}{\includegraphics[width=0.15\linewidth]{BUB_Emblem}} & \multicolumn{1}{l}{\Huge{University}}\\
\large{Dr Vijaykumar H Doddamani} & & \multicolumn{1}{l}{Department of Physics} \\
\multicolumn{1}{r}{M.Sc., M. Phil., PhD} && \multicolumn{1}{l}{Ph. Off: 080-22961471/84} \\
&&\multicolumn{1}{l}{Fax: [phone]}\\
\multicolumn{1}{l}{\textbf{\large Professor}} & & \multicolumn{1}{l}{Mobile : [phone]} \\
\multicolumn{1}{l}{Email: drvkd#gmail.com} & Jnanabharathi Campus & \multicolumn{1}{l}{Mobile : [phone]} \\
\multicolumn{1}{r}{profvijaykumarhd#bub.ernet.in} & Bengaluru - 560 056 & \multicolumn{1}{l}{WhatsApp :[phone]} \\
%
\end{tabular}
\vskip2mm
\vspace{2mm}
\doublerule[1pt]
\end{document}
With this code, This is the output I am getting.
enter image description here
I have put in the arrows and comments in this imagearrows and comments for width alinment

Answer 1

\documentclass[12 pt,a4 paper]{article}
\usepackage[top=1cm,left=1in,right=1 in,bottom=1in]{geometry}
\usepackage[table]{xcolor}
\usepackage{times}
\usepackage{graphicx}
\usepackage{marvosym}
\usepackage[onehalfspacing]{setspace}
\usepackage{tikz}
\usetikzlibrary{calc}
\usepackage{fancyhdr}
\pagestyle{fancy}
\usepackage{multirow}
\fancyhf{}
\newcommand{\doublerule}[1][.4pt]{%
\noindent%
\makebox[0pt][l]{\rule[.7ex]{\linewidth}{#1}}%
\rule[.3ex]{\linewidth}{#1}}
\begin{document}
\pagestyle{empty}
\vspace{12 mm}
\centerline{%
\makebox[\paperwidth]{%
\begin{tabular}{#{\hspace{.08\paperwidth}} p{.32\paperwidth} p{.2\paperwidth} p{.32\paperwidth} #{\hspace{.08\paperwidth}} }
\multicolumn{1}{#{}r#{}}{\Large Bangalore} & \centering\multirow{1}{*}{\includegraphics[width=.9\linewidth]{example-image-duck}} & \Large University\\
\multicolumn{1}{#{}r#{}}{\large Dr Vijaykumar H Doddamani} & & Department of Physics\\
\multicolumn{1}{#{}r#{}}{M.Sc., M. Phil., PhD} && Ph. Off: 080-22961471/84 \\
&&Fax: [phone]\\
\textbf{\large Professor} & & Mobile : [phone] \\
Email: drvkd#gmail.com & \centering Jnanabharathi Campus & Mobile : [phone] \\
\hphantom{Email:} profvijaykumarhd#bub.ernet.in & \centering Bengaluru - 560 056 & WhatsApp :[phone] \\[2mm]
\arrayrulecolor{red}\hline\hline
\end{tabular}%
}}
\end{document}