I tried to install Norton but it cant because of an error?

My Norton subscription was running out so I brought Security Deluxe subscription from my catalogue. The day it ran out I went to put the new in but when I did this I had this message come up...

Your key has been redeemed successfully but the setup could not be started.

The error occurs because of out-of-date Operating system components related to XML Core Services (XML). XML is a set of services that allow applications written in JScript, VBScript, or Norton development tools to build Windows-native XML-based applications. We recommend you to CALL us 1800-881-0552  in order to fix it.

 

Now I rang the number and was put through to a man who would help me so I thought? I couldn't really understand him what he was saying but from what I did understand was he said it was something to do with my network he could fix the problem if I paid £250 and I wouldn't have any problems again ever.  When he was talking away very fast I couldn't understand him and I wanted to know more about this £250 payment, I tried asking him questions and what he said to me was unbelievable for someone who is there to help... He said I talked to much! hardly, I couldn't get a word in edgeways.  I told him I wouldn't be taking him up on this offer.

So what do I do now, how do I get Norton back on my computer because I don't really want to have any other anti virus besides Norton.

thanks for any help offered

Elaine.