Lack of communication

I recently took lifecover with the funeral benefit. I was told that I need to send proof of cover from my previous insurers to waiver the waiting period. I have been sending my documents since 28th March however I still have not received a response which make my nervous because I was with my previous insurer since 2016. Currently it feels like I made a bad choice by moving to miway because of their conduct. While I was still on the sale stage I was receiving upto 5 calls a day. Now that I have accepted the cover they can't even reply to my emails. How do I know that the waiting period has been waivered and that I won't have issues at claim stage.