Cartrack *****

Last year June cartrack debited my account and I reversed because I no longer have a contract with them, they tried again after 2 weeks and I reversed it again and send them an email asking y they debiting my account for a contract I canceled in 2019,they told me my contract is stil active and started harrasing me with calls and emails saying I owe R399, I kindly told them I Wil not pay that amount cos my contract was ended in 2019 so from 2019 until 2023 who have been paying account, they demanding a cancelation email n I explained I don't have it since it was done in 2019,also asked them again to cancel for the second time. I'm being blacklisted now for a contract I ended and now they say I must pay R1800 plus the R399.. Is unfair n frustrating cos everyone I try to contact at cartrack can't explain who re activated my account