That is Bs! The bass has come from a bad batch of poor quality control ! First thing I would do if it were me , is to condemn them on trustpilot , farce book , X etc .You could also point them to this topic here ! If you are still in the timeframe , then you have your consumer rights .
You’ve done me a favour by mentioning Guitar Guitar , who will be avoided by me in the future .
On a slight tangent ; I did post a topic about cort space 5 a couple of weeks ago ,regarding the fluctuating prices. I’ve since seen that the price for the green one has gone down to £679 .However I had a look at the picture and it seems ‘off’ . What I mean by that is it looks like these basses are being churned out by the shed load without much due care and attention imho ..similar to yours ! It’s put me off of wanting one now . If I do go for a 5 string , I’ll choose a completely different brand of headless .