no response

i changed my insurance to discovery insure November 2014 and had not been informed by the agent that i'd only be able to get a booking to install the tracking device for February 2015. I have sent discovery a feedback response on this issue on 10 December 2014. No response till date. The new unit was installed and i had the old unit removed. I sent them proof of removal. No response. The sms number that was provided in order to test the tracking system doesn't seem to work. I informed discovery on the 16/03/2015. No response up to date. <br> What is happening here? Do i need to move my insurance because up to date i haven't been convinced that you have any customer care/feedback response. is this what will happen in the event of a claim?