Still waiting

On 23 April 2018 I phoned Discovery Life and spoke to an agent who could not help me regarding a question of ethics around two policies taken out in 2001 and 2003. He gave me the email address to which to submit my complaint. On 24 April I sent an email to this address but received no response. On 9 May I re-sent the email to the same address and received an acknowledgement saying that they would take 2-3 days to give me feedback. On 15 May I received a further email saying that the investigation was still in progress and that they will provide feedback as urgently as possible. Just wondering how long this is likely to take?