Poor service/no service at all

I have a warranty policy with dotsure and i must say they are very difficult to get hold of, i had a breakdown with my vehicle on Friday and i took it to a workshop and they diagnosed the problem, i tried contacting dotsure to submit a claim but got sent pillar to post, i tried phoning them again yesterday and got transferred to various departments till one lady transfered me and the call hung up, i left a voice message on their option to receive a call back i haven't been contacted back, the workshop has diagnosed the problem and i have authorised them to proceed because i need a vehicle, so now I'm going to have to pay the workshop today because my car will be ready today, i have a warranty that i cant claim from i dont recommend dotsure they dont have service at all I'm planning to cancel both my cars from them, because even my other vehicle i wanted to ammend the debit order it has been 2 months they haven't sorted it