Mixtelematics poor customer care

From last year 2020, spoke to a consultant to make changes on my policy, however those changes never came into effect. I have being struggling since to get a reply from a consultant at mixtelematics to date. All i get is "they are experiencing high call volumes... Leave a message and a consultant will get back to'. I have left countless messages. This frustration of not getting through to a company with whom I am a paying customer, is what has led me to cancell my policy with them. SInce I have sent email notice on 1 August 2021 for cancellation of policy, and a follow up on 8 Sept 2021, I have received 2 separate refs for the matter. Few days ago I get sms"s asking me to make payment and this for a service I have requested to be cancelled. I have emailed accounts dept as well, received ref but no one has contacted me. It appears the only response you can get from mixtelmatics/beame is to go through this route being on Hello Peter, which is a poor reflection on the company.