Debit order up and down

I've never felt so disgusted and irritated by a company. Each and everyday since 2 weeks ago, I've been receiving calls saying that I owe them R236, 00 first because I've got 2 vehicles and I paid tracker just for the 1 vehicle and not the other and I asked the consultant to tell me the Registrations of the 2 cars, guess what.... It's the same registration number and she said she'd rectify this. This has been my life 4 the past 2 weeks. Last Friday, I spoke to Tshidi and we spoke 4 almost half an hour and she kept on saying it was a debit order for last year November, I asked after all this months, almost a year later that's when they realized I owe money from last year. Very pumpous and telling me that I'm speaking in between her that's why we are not getting any where. I asked her to check 4 me this debit order of November last year and she said they received the money. So I asked where is this R236 coming from, again she said November... Eventually she said the lady who called me on the 28th, Anna will call me and explain to me what the problem is. I ask all this call Centre agents of Car track to write on the system that they must stop calling me and every one of them says they will but I still get calls on a daily basis... Anna has not called me to date and then on Monday, Vincent called me with the same tune and I had to be a parrot once again and recite my story. Today, the same Tshidi called me with the same story. I had to leave my meeting and recite once again. I asked her to please give me a number of her manager and she said he doesn't have a direct number but will ask the manager to call me. I'm pleading with Cartrack to come and take out their tracking unit and I will work with a reputable company that will not harass me as though I'm a liability to them but will treat me with dignity and respect.