iWyze poor customer service

iWyze have now taken 20 working days and I have received nothing from them by way of an assessor report, progress on the claim or what the outcome will be. Their service is abysmal and client communication completely non-existent. As a loyal customer, from November 2017 I have never missed a premium payment and to date have only ever cost them 1 windscreen - I consider my money to have been very poorly spent with iWyze. I am at a complete loss as to a constructive way forwards, other than to proceed in my own capacity and cost to replace my vehicle as I am almost a month without anything and no clue as to either an outcome or a timeframe from them. They don't even have a complaints procedure that I can find, and I have yet to receive a call back from any agent. The only way to speak to a real person is to follow the prompts for a new policy as the Claims line remains unanswered.