Unhappy

I have been insured with Dotsure for three years. I recently received a message stating that my no claim bonus will be paid on 30 June. My debiit order did not go through a few months ago. I received a call from Dotsure asking on which date they can debit my premium for my account which they did. My debit order did not go through at the end of May. I called Dotsure last week but was unable to get through as they had problems with their lines so I logged onto their live chat and asked them to put through my debit order. By Monday the money had not been deducted so I called again. I was informed by customer service that they could not take my outstanding premuim as these are paid on a month to month basis. I was able to get a much cheaper rate but chose to stay with Dotsure. I have cancelled my policy