Sometimes the review sites (separate from the firms that sold you the items) are US owned and thus will often (and sometimes in breach of our/previously EU privacy laws) have automatic opt-in privacy/communications settings, whereby you have to contact them to opt out of having your personal data used - inlcuding sold on to God-knows-who 3rd parties via data mining firms.
Even using some UK firms, they can breach the privacy rules (the insurance screenscrapers have been nototrious for this) and so I always check before even contemplating buying whether they do this or what you have to do to stop your information being 'mined'.
Of course, there have been instances of well-known retailers (PC World/Currys) and others (including Mircrosoft!) being hacked and customer's details (to varying degrees) being sold to criminals and spammers.
If the OP doesn't purchase much online and the problems (especially if they've never had any before and no other 'new' things happened of late [a new person on your email list may have been hacked]), then it is worth searching to see if that firm has had security issues and also contacting them/logging on to find out what are their privacy settings/rules for them.
Sounds to me that it could be more than a coincidence.
|