I had a bit of a dilemma. I can't just block the address for these emails, because then it will block both, not just the double. I still want to get the one on my 'deal' address. So I check their site. It says, and I quote:
"It's easy to unsubscribe from our emails. There's always an
"unsubscribe" link at the bottom of every email we send. Click that link
and submit your request to be unsubscribed. Please allow up to five
business days for your request to be processed and for your email
address to be removed from future mailings.
If you've used the "unsubscribe" link at the bottom of our emails, but you're still getting emails from us, please submit your details on this form so we can give it immediate attention."
Submit I did. What follows is my complete (minus some personal info) email communications with Smartsource's support. My attempt to get "immediate attention", spanning 4 days and 10 emails total (counting my emails to them and their replies). This is some of the most inept customer service I have seen. (I have added some commentary in blue)