Bad service from hollard

I opened an education policy with hollard, I noticed that when they deducted the premiums it was not what the broker and I had agreed upon. The policy syarted to be active a month prior the one we agreed upon and the premiums were being deducted from my account and persal. I notified the broker about this he assured me that everything was going to be fine but the following month they deducted from my persal and bank account again, when I communicated about this with him he ignored all my messages. I lodged a complaint with their relevant department, I was disappointed in the way they handled the matter, the broker was not questioned I was the one who had to submit all the proof of everything that transpired and he was not held accountable. They refunded me my premiums but it was not all the premiums and they indicated that I can take the matter up with their adjudicator if I was not satisfied and I did that. They promised to start an investigation and would get back to me with a written updated within 14 days. After the 14 days had passed I enquired about the status of the investigation and they have not been replying to my emails since now and I stiil have not received all my premiums. Their service is bad I would not recommend them to anyone they cannot even hold one of their own accountable.