Cartrack - Corporate Spamming

My contract with Cartrack matured and I paid it up, shared proof of payment and requested termination effective maturity date. No cancellation was effected. Cartrack advised to cancel again and debited my account an additional two installments or more after their failure to effect my first instruction. On attempting a send attempt at cancellation, Cartrack had incorrect registration details for the affected vehicle and therefore the cancellation could again not be effected and they were unwilling to furnish contract documents were they had gotten the incorrect details from or provide recordings of my initial cancellation request which was not effected. After finally looking for the correct details myself and having them correct the incorrect details they got from who knows where, I was told a cancellation request had been effected and any debit under the contract that falls within 20 days will be debited to my account. I am now being harassed by no less than five calls, five emails, five WhatsApps per day. Think carefully before you do business with Cartrack in search of peace of mind, Cartrack is hellbent on making sure you will have non of it when the relationship comes to an end.