Useless Netstar retentions department

I bought a new car recently and my insurance advised I have 7days to have a tracking device fitted, after being a loyal long standing customer of Netstar I didnt even think to shop in the market and called Netstar once I took delivery of my new vehicle to arrange a new device. I was told that someone will call me back from the retentions team after about 5 calls and the 7day deadline approaching, not a soul in Netstar's pathetic organization could assist me. I contacted another tracking company and was helped that same day and managed to get the certificate through to my insurance.

2 weeks later a retentions agent calls me and now I am being harassed by your debt collectors! as Netstar are not providing me a service so I cancelled my debit order.

My message to Netstar, you guys can whistle for your money! as I am not paying you a cent as I had to run after you wait on calls and still no joy, so let your debt collectors continue to call me as I will waste their time and continue to tell the public how you treat your loyal paying customers!