Not accessible to their customers

I HAVE BEEN TRYING TO GET AHOLD OF THIS LEGAL DEPARTMENT SINCE THE 18TH MAY 2015 TO GET MY LINE RECONNECTED. I'VE PAID THE OUTSTANDING BALANCE (WHICH I WAS UNABLE TO DO BEFORE HAND AS I WAS OUT OF THE COUNTRY FOR A LONG PERIOD OF TIME) NO ONE PICKS UP THE LINES AND IT'S BECOMING INCREASINGLY FRUSTRATING!!! I HATE THAT NASHUA MOBILES CLOSED DOWN AND TRANSFERRED MY ACCOUNT OVER TO MTN BECAUSE I HAVE NEVER HAD TO DEAL WITH SUCH INCOMPETENCE BEFORE. AND AS A LEADING MOBILE SERVICE PROVIDER, THIS IS UNACCEPTABLE! I DO NOT WANT AN EMAIL APOLOGIZING FOR ANY INCONVENIENCES THAT MAY HAVE BEEN CAUSED ETC, I WANT MTN TO DO THEIR JOB AND BE ACCESSIBLE TO THEIR CUSTOMERS AT ALL TIMES AND STOP GIVING US THE RUN AROUND...WHILST THEY DO NOTHING ABOUT THE MANY CUSTOMERS EXPERIENCING THE SAME PROBLEM