lack of communication and public relation skills

So I booked my car in on 12 June 2021 @ 14:30 for 13.06.2021 to 16.06.2021. When I arrived to drop off the vehicle the collecting driver said I did not fill in my details, nor sure how the booking was made if there was no details, anyways I show him my booking and he wrote down my return flight number date and time, which I thought he was going to pass on to his company, but clearly that did not happen. So 16.06.2021 comes, I whatsapp Dynamic Parking my Itenery from Zambia's airport 1.5 hour before my flight that's @ 1830, to inform then that I'm checked in and on my way. At 21:05 I arrive at the dropoff/collection zone at parkade 2 level 3, my car not onsite and my cell was dead with a zambia sim card in that I could not change as I did not have a pin to open the cell to change it, whats the point of showing them your itinerary before you leave and 4 hours before you return if they not going to bring your car so that it is there when you are there, so im waiting and waiting and 15/20mins later a dynamic parking employee rocks up to collect someone's else's car, so I asked him to let his office know that I'm there. 15/20 mins later they arrived with my car with a invoice that said I owed alot more than I thought I owed, it was late so I didn't not argue about the price as I just them what they want plus a R35 tip as i really wanted to get home so i just paid it. The next day I had another look at the invoice they gave me and realised that my deposit was not captured on it so I thought that was the reason for the increase in price as I did not get a email with the invoice for my booking, the email that I got was currupted and not readable as it was just "code" . So I asked danamic parking for a "Voucher" "sure this is a sign of good gesture from me?" as the invoice was missing my deposit, some hours later I got a rude reply saying I booked wrong dates and the invoice is right even thought my deposit was not captured. And I must give my bank details and not use dynamic parking services or almanac services again, what kind of business are they running when they cant reasonably explain and make representations to a paying customer about why they have paid an unexpected amount after they have already paid...? So I told them to keep the money, if the mistake is mine I will own it but I will not take lack of public relations/social skills like that lightly, if you have a service business then you my be able to deal polity with public and in the interest of the business and not come tell me I must not use thier "companies" because of a misunderstanding. But its fine, after reading some of the bad reviews they hot here it's probly for the best as the next time I would have used them I might have gotten my car back damaged....so farewell dynamic parking and almanac parking, I will never use or recommend you to anybody ever again!