Can you not take it back to where you purchased it from? Surely if you just bought it and being a 67 plate they should help you out? Didn't realise we'd gone back to activation codes. Eg on my MK2 Leons the stereo has always been coded to the car so you could remove it and disconnect it as much as you like.
We had exactly the same on our 67 plate se lux, but our dealer cocked up, they only quoted £120 as they said it just needed the code, they did it when the car went in for service but when I got home and tried it it didn’t work, I then read the manual that come with it and it said you needed a new usb and aux port plug and connection plug for the back of the socket, contacted them the next day, they admitted they’ed messed up and ordered the 2 parts, come to about £25 ( I didn’t pay tho) the thing was the dealers are miles away, so as I’m a mechanic and I got them to send me the parts instead and I’d fit them, it’s about an hour and a half job and you have to take the centre console apart to get to the wiring, Wright fiddly job and you will need the correct pin unlocking tools for the electrical connections to swop the wiring over the the new plug. But after I had fitted it it now works a treat! I presume your price includes £120 for full link, £25 parts and 1 and a bit hours labour to fit. Don’t let them fob you off that just the activation will work! It won’t! I have the part numbers in the garage, I’ll sort them out for you tomorrow!