Slow delivery, no help desk and overcharged

I shipped a passport from Mallorca, Spain to Cape Town, South Africa, they quoted me R536 and charged that to my credit card. I dropped it off at their depot on Monday morning around 09h00 and their App stated it would be delivered that Tuesday evening. It arrived Friday morning. Later that same Friday, the 26th November, I organised a pick up that afternoon before 18h00 for delivery by the following Tuesday 30th. They never collected the package, so on Saturday morning I had it dropped off at their depot. They had no reason for not collecting it the previous day. When I ordered this service on-line they quoted me R700 odd which is what I based my order on. Their App acknowledged receipt of the package on the Saturday morning and the ETA remained the 30th. The package arrived on Tuesday 7th. In the meantime I had tried every contact and help on their App and website without getting any meaningful response, this included international calls to the USA. A week later they deducted an amount of R1248 from my credit card - nearly double the accepted price and nearly three times what it cost for the delivery in the other direction between the same addresses. When I query the change they simply respond that I must show them the quote - which they know I do not have because they do not email you a quote when you order online. Terribly slow service, no effective helpdesk and they deduct more than their quote from your credit card without reason. A company to be avoided at all costs.