Sub standard service from car track

My Husband had the unit installed in our car on the 9th of August 2020. We've been to the free state on 2 occasions in September, on both instances when we called car track for the cars locaction, they could not pick it up. They would promise to call back but never did. 2 weeks ago my Husband received an sms from cartrack saying he should contact them because the unit is faulty, so he needs to book it for repairs. When he called they said they would get the technical team to contact him, which they never did. Instead they booked the appointment for the 22nd of October but never bothered to inform him of the appointment so he obviously didn't show up. He keeps on calling them and they keep saying they will return his call. This past friday when he asked for the cars loaction, they said the last location they pick up was on the 16th of October. He asked to speak to the manager, was promised to be contacted by the manager before close of business which never happened. The worse part is that if we want to change to another tracking company, we have to cough up R2500 for cancel the contract with them so they can unistall the unit yet the are the ones who are giving ****py service.