REPLY TO DOLLAR THRIFTY RESPONSE DATED 26 APRIL 2018

Dear Sir/Madam, Thank you for your response. My dilemma is that your company is not responding to my correspondence. How do I contact them? All my four emails on 6 December 2017, 7 September 2017, 3 August 2017, 17 July 2017 and 6 July were sent to them (Dollar Thrifty Cape Town International branch) that were given to me telephonically. THEY HAVE NOT ANSWERED A SINGLE ONE TO DATE. KINDLY ADVISE WHICH EMAIL MUST I USE THEN.