paying for extra product

hi all,  i had a problem which i contacted norton  they said i had hackers on my comp and i needed to pay for another programme, well i paid  but wasnt really happy about it, and while i was  watching the scan i noticed they download 2 programmes  malwarebytes and superantivirus, well both of these can be downloaded free!!!! so i cant understand why i paid and  when i asked them to explain again why  i had to pay they said it was a one off payment for tech advice and help(which i thought was free anyway with norton), but was getting  a system which will stop hackers etc  allthe time i use the comp. but  i cant help feeling a bit scamed as i assumed norton would protect me from all that