Refuse to change shipping address

I order three items on Friday afternoon. On checkout, I was given the option for guaranteed weekend delivery on Saturday. I chose that option, changed my delivery address to my home address and paid. Later that evening I got the expected delivery date and it said it is only going to be delivered on Tuesday 14 Nov. I emailed Takealot and asked to please change my delivery address to my work address to which I received a reply saying that it is not an issue and to please send them the updated address. I sent the updated address later on Saturday. I then received another email from another person saying that they can't change the address anymore to which I again rep**** and explain to them that it is not my fault that they can't deliver on Saturday even though they "Guarantee" it. I received another reply today where they basically tell me that they refuse to change the delivery address and my only option is to the wait till this weekend. Funny thing is that the package was already sent out to my house as I received a phone call from my gate. I had to tell them to leave the goods with the security which I am not comfortable with because if it gets ****** Takealot will not take responsibility for it. So, in a nutshell, you ***** up and then refuse to make a compromise to assist your customer. I have been buying from Takealot when it was still take2 back in 2011. I am done.