Hollard - worst customer service ever experienced

I am being debited by Hollard. After unsuccessfully repeatedly calling them and emailing them, I eventually got my Insurance Broker to see if she could find some information for me. I received an email from them, reflecting that the policy is a House Contents policy - I have never received any correspondence from them and the details on the schedule were far from correct - no ID number, no physical address, postal address incorrect etc. I immediately emailed them to ask for proof of my original application - no reply - again. I contacted Tina from the Complaints Division, who said she would get someone to look into it. A Customer Service Agent did contact me but I was unable to hear her properly, so asked her to email the details to me. I have never heard back from her. I tried to call Tina on Friday, left a message with Lesley and another message with another woman today. In the meantime, i have sent 3 Cancellation requests to them and again, no response.