Worst booking and customerservice EVER

Stay away!!!!!!!Do not do not make use of them and my advice to Hotels will be the same as their service and abilities to help local South Africans is pathetic. On the 5th of April 2018, I made a booking for 2 adults and 2 twin rooms at Casa Elana. The minute a paid (deducted from my credit card) I realized the dates were incorrect. I made a booking for the 15 & the 16th of April instead of 15-20 April. But that is not a problem cause according to the website you can amend your booking. Trying to do that -hilarious not a change in hell!!!!! It would not allow you to reselect the 15th and the 16th. Then I tried to add the 17-20. Just to find out that the 15 and 16 are now canceled!!!!!! This was done all on the 5th of April 2018. I immediately sent an email to the customer service explaining that it is an extension, not a cancelation. Now try to contact them....... There was a 011 number just to find out after a 9-minute long call, that might be charged at international rates, that the hotel will only be able to contact me the next day....which of course did not happen, So after paying the complete amount on the 5th and contacting the hotel on the 7th myself to explain to them that it is not a cancellation, but THEIR system would not allow reselection . I received an email informing that I now owe them an additional amount due to my cancelation. I have to pay for additionally amount for a single room to share, that I tried to inform them not to cancel, but their system does not allow efficient 2-way interaction. Leaving me with a single room to share and that I still have to pay due to their systems and it seems staff inability to do changes on the day of the booking. I then realized maybe this was their intention from the start with their system and that it is not due to a system error but more a system implementation to create more money and then provide a CANCELATION POLICY as an excuse. The worst part is that I can see they do not care about their customers at all after they received their money as none of these complaints were ever actioned. But I know I did my part in warning the rest of South Africa STAY AWAY FROM Agoda Bookings!!!!!!