Boxymo - Terrible service

I purchased a car and filled out the transfer of ownership form, I got notice that they required car registration log book. I uploaded the copy of the original car registration certificate and transfer of ownership form and explained that I was waiting on the tax office to send it back in my name. The company to install the box in the car cancelled at the last minute and changed the date to a later time. I got notification that my policy was going to cancel and rang to explain the situation. I asked to speak to a manager or supervisor but was told that they won't take any phonecalls, I sent an email to the complaints department and heard nothing back. The documentation requests the car registration certificate which was sent to them but not accepted. They cancelled the policy with reasons being no box fitted and car registration not received, both of which were out of my control. I was told that they will be charging me a cancellation fee for a policy that I never wanted to be cancelled, but won't tell me how much. Don't bother telling me in a response to this to send an email to your complaints email account, I've already done that and had no response.
I have never dealt with such unhelpful people on the phone or been told that supervisors don't take any phonecalls.
I actually think I've had a lucky escape because I would hate to be dealing with them if ever I needed to make a claim.