Erroneous Charge Car Track Not Responding or Refunding

I got an extraordinary invoice (and bank account debit) 3rd October for cross border tracking. As neither my car nor myself had left the country, I called Car Track. It took a while to get to the correct person (went through 4!) but Amanda from Client Services was helpful and promised to get the credit services department to refund the amount. OK, it's only R19.28 but why should I pay when it's an erroneous charge? On the 4th October I emailed accounts@cartrack... and said I'd spoken to Amanda and this charge was going to be reversed. Not a single response or report back from them since then, nor a refund so I went onto the online chat on Monday 31st and enquired. I was told that nothing had been logged so it would be escalated and investigated. After 3 weeks! The agent said they would not refund without an investigation and I'd have to wait. I then emailed the saga to CEOescalations@cartrack... but again, no response. 1st November I emailed ethics@cartrack, pointing out that as my husband, myself and my car were at a community workshop on the day my vehicle was supposedly in Swaziland, with not only 15 delegates but the entire population of a primary school to vouch for this, that the refund should happen immediately. Again, no response. So guess what, Car Track, you've lost a customer with THREE vehicles and you well deserve this!