Email harrasment

So, I used netflorist once, from 1 email address. I don't know how, but they had me on their mailing list with 3 different email addresses, so I was getting every netflorist email 3 times. I unsubscribed from their newsletters on every email address numerous times, but kept getting emails. I eventually phoned them, spoke to a very helpful consultant and got unsubscribed on all 3 emails address - or so I thought.

A while back, without me visiting the netflorist site or subscribing to them, I started getting emails again from ********** I phoned again, again they told me that they would unsubscribe me.

This morning, I open my inbox and what do I see? An email from ********** ***?? I believe that continuing to email a person after they unsubscribed is *******, and even if it isn't, it's bad practice and makes netflorist look extremely bad. I will NEVER use them again if I have to go trough this irritation every time I have something delivered.

Why even have an unsubscribe option if netflorist is going to ignore your wishes in any case?