NETSTAR CAR TRACKING COMPONY,THEIR AGENTS ARE A WASTE OF TIME

I had a netstar tracker in my renault clio 2017,early this year in March an attempted hijacking resulted in a very bad accident which my car renault io 2017 was written off the psychological trauma i was going through,mase me even to forget what covers i had in my car that i needed to cancel,1 by 1 i started to remember and called netstar must be was beggining or maybe end of April when i called Netstar to ask them to cancel my debit order as i had no car at that time,i explained what heppened and my car was written off i had no car at that time,the agent i spoke to at netstar informed me that she was gona cancell my debit order and she was making a note with regards to my situation to me it was like ok its DONE,so afterwards i kept on seeing netstar so i reversed the amount,than stopped that debit irder with my bank,than i recieved a call from netster stating that im in arrears i needed to pay i dont remember which month,i then explained to the agent that i'v cancelled my contruct with netstar as i dont have a car it was written off,again the agent told me he/she as i dont remember whether it was a guy or a lady,told me will make a note of what i was stating,than couple of months again im getting a call regarding of what im owing and that i needed to pay i had to ecplain myself again,than only the 3rd agent told me that i needed to email netstar to cancel my cover not by telephone,i than said bt not 1 netstar agent bt 2 agents that i spoke to over the fone to cancell my debits did they tell me and explain the correct way of doing that,i was just told that they will make a note of my cancelation now they keep on calling me to say i still owe them,the last person called yesterday for actually something else i think she was offering me something from netstar i stopped her there and than when she mentioned netstar word and told her i dont want anything from nestar i told her my reason from the start of my accident ,i was at the grocery store in the morning but i stopped what j was doing and spoke to her regarding this isseu,she told me the same thiing like the 3rd agent that i needed to email to cancel my contruct,and they are going to charge me i said to her if im calling netstar to cancel something with them and the agent fail to explain to me the right channel of doing the cancelation not one but two agents fail to tell me on how to go about regarding the cancellation how is that my problem really as a customer?i asked her to send me the email address so i can email and write to complaints department regarding this issue,she said she would send all that information,which im still waiting for it from yesterday morning,i did not get anything from her,but they are expecting me to pay them when their agent fail to do their work,really this is exausting,im not willing to pay them anything