Very disappointed in Discovery

Ive seen the Discovery insure ad on Television and decided that Id be stupid not to take advantage of the Vitality drive they are offering, so I gave them a call and took out insurance with them in October 2019. It wouldve been arranged that Ill get the DQ Tracking system installed in my vehicle and would soon be earning rewards for good driving and for filling up at the selected gas stations. I followed all the steps with regards to making an appointment to fit the unit but couldnt get a date as Im in a remote area. Gave them a call again to ask for assistance and the ensured me that they would book it. I followed up monthly but up till now Im still not earning any rewards or cash back due to no Tracker being fitted. Also I feel my vehicle is vulnerable because of this. I phoned and asked for them to at least consider giving me the 25% discount during Covid seeing as Im not driving my vehicle at all and they said it would be organised but it also didnt happen. All the while Im paying for a tracking unit which is never installed. Recently I got a crack on my windscreen, phoned them and logged a claim. They sent some un-accredited people to me with the wrong windscreen. I phoned again ro recrify it and it wouldve been done as usual. That was 4 days ago, I phoned again today just to hear the same story as 4 days ago and still my problem isnt resolved. Ill surely be canceling my policy with them as soon as my window is fixed, whichever year it might be.