Cartrack bad service provider

Good morning, I signed up 3year contract with cartrack for a device with a panic button and they are not rendering the services that I have signed for. Everytime when I press the panic button no call from them coming through and I phoned them several times asking them to test if their device os working 100% and they usually tell me that they will call me back because at that moment they couldn't locate my car they didn't phone me back. When I am trying to use their app on a smart phone it shows wrong car location, I asked them to terminate my contract as it is a breach of contract on their side since they don't provide the services that are stipulated on their terms and conditions its like I am just donating my kids money to them and I was told that I must pay +-R2500 for them to remove the useless non accurate device and I then told them that I will not pay that money since they arr the one's at fault. The lady told me that she will escalate my query to the repairs manager to request a removal of yhe device without me paying the amount mentioned above and 14 days later I am still waiting for the call. CARTRACK PLEASE REMOVE YOUR DEVICE FROM MY CAR, as I am typing this boom a debit from them just got deducted from my bank account, how nice...#Dissapointed