Poor Service

I keep on getting phone calls from SCS (Pty)Ltd claiming that my account is behind. I have advised both SCS and MiX Telematics Africa that the vehicle in which the tracking unit was installed was involved in an accident in May 2018 and subsequently written off by my insurance. In July 2018, I received a telephone call from a representative from Beame. During this conversation I advised them of same and requested that they cancel the contract. On 13 and 22 November 2018, I received further telephonic calls from Beame. I again advised them of the above. I advised them that they keep on debiting my account and they advised they will rectify the situation. The above was again repeated on 15 and 28 January 2019. I have mailed both SCS and MiX Telematics requesting confirmation that I my account is not outstanding and SCS will stop harassing me. Notwithstanding this no reply has been received from either Beame or SCS except for phoning me and having the repeat everything again.