This is the inside of the buldged tyre.
If this had happened whilst at speed I suspect you would be in court now.
I would suggest you arrange collection of these tyres next week along with a refund of my money or I will be taking this further.
This failure is unacceptable, your handling of the issue leaves a lot to be desired, at the moment if you can give me a satisfactory outcome I'm happy to leave it at that, if however you don't I will make this very public which as I imagine you are aware will damage your reputation.