Bad service

I got the insurance contract with dotsure after I bought my brand new two cars... They told me that they will fit the netstar trucking device to both of my vehicles... I told them that I don't work with my phone at work and advised them from the first day I got the contract with them... I gave them my spouse's number for the fitment arrangements, I even made follow up with them and I further asked them to put me through to the netstar car tracker to arrange the fitment... I was so disappointed when I left both my cars at home for them to fit the trackers in them, I even left my phone at home so that when they call my spouse can answer after I arranged the fitment day and time with their netstar. I was so disappointed when they failed to show up and my contract package was incomplete, then I decided to end the contract with immediate effect... When I ask for the refund via email I'm struggling to get my money back with only closed report on the response on emails.