Poor customer service

I was a client for cartrack the past year, everything worked out fine until the contract came to an end a di was not aware because they were deducting premiums from the vehicle's premiums, instead of them calling me and explain so that I can make an arrangement so tatthey can debit straight from my account, they cancel the contract and handed me to nimble group saying that I owe them. I don't eve owe them anything,I'm so disappointed and hurt because all along I thought my car was safe and have an active tracker but nothing. And when I call the company I was told that my tracker contract has been cancelled and I'm handed over to nimble group I don't know for what, now my name is been dragged on the mud for nothing