Impossible to cancel

I initially contacted Dotsure on 14 April to cancel my current pet insurance policy. This was immediately acknowledged in an auto-reply. I missed a call from them 2 days later, with an email to say they could not get hold of me and that phone confirmation is required to cancel the pollicy. I rep**** to the mail immediately to let them know I am available, but have still not received a call back. So I contacted them this morning (22 April) to enquire about the status of my cancellation and was informed that it was logged, but all the people in the relevant department are busy, but that they will call me back. I called again later to make sure I will be called and was assured I will be caled back before 17:00 today. Well, right now it's 18:22 and I am still waiting for a call back. I need this policy cancelled promptly and it is STILL not cancelled - 8 days after I logged the call. Pathetic service and I will never recommend Dosure to anyone. Sadly the minimum rating here is 1, otherwise I would rate them 0 - after 7 years of being a loyal client of theirs.