Hi, I can't help you with this insurance problem but here is my opinion.
The insurance companies are using this as an excuse to make money.
You have been severely punished for drink driving and are therefore unlikely to re-offend.
After all that is what the punishment is for.
The insurance companies are implying that you are more likely to offend after you have been punished.
That being the case, what's the point of being punished?
If being punished makes an offender more likely to re-offend then the punishment should be scrapped
and replaced with rehabilation courses.