Still awaiting call to cancel policy

I am very horrified in the horrible service received from Discovery Insure. I cancelled my policy as I found another comprehensive insurance with lower premiums and lower excess. I called Tues 10/02 and was told a consultant will call me within 3 working days on the 3rd day Fri no one called and I called again, the call centre agent escalated it to manager and by Mon still nothing I called again, again promised will receive a call before working day ended, didn't happen. I called again Tues morning again escalated to manager, the afternoon received a call and offered slight lower premium but higher then new insurance but I asked them to send new documents through and I'd have a look first and the consultant promised to do so, by Wed still not received. I called again Thurs to say I want policy cancelled not interested in lower quote as I have received horrible service, promised I'd receive a call within 24hrs. Yes it's Fri and no such call has been received. I am so fedup with this Insurance and this is just a cancellation, imagine it was a claim! Thank goodness I'm cancelling my policy, OK I'm trying to cancel the policy, can someone please call me to do this simple task!