Bad service after car has been purchased

I'm very disappointed in the service im receiving after the purchase of the vehicle. I was extremely happy when I purchased the vehicle, but not long after that I started experiencing issues with the central locking and chips on the windscreen, when taking the car back the chips were only fixed and apparently the central locking was also sorted out, not even a week later literally within the same week the central locking started giving issues where its not working at all and the chips have reappeared on the windscreen. Now when im trying to get it sorted out im given stories. With the crime rate so high I can't afford to still be locking my car with the keys when there's a central locking system and alarm system in the car. If anyone should try to break in they'll do it successfully because there's no alarm to alert me or even tracker. Very bad service its very sad that after the deal is done and money is paid to the dealership they couldn't be bothered one bit about the problems you are experiencing. It just shows you that its all about making money and nothing about putting customers 1st.