No response from Lewis on request for paid-up letter

Seems like Lewis's Customer Support is non-existent. I need my paid up letter from Lewis Group for my Best Electric account. After phoning customer support I was informed to email the legal department at legal @ the lewisgroup.co.za to obtain this letter. I have send them an email on 25 March 2019 requesting this letter. I did not receive the customary auto-reply saying that they will get back to me, nor any other form of communication or reply. I also have not received the letter as yet. I need this document and would really appreciate if Lewis could assist me in this matter.