A Brighton-based white goods business was fined £200,000 for a "sustained and exploitative campaign" of obnoxious calls.
The Telephone Preference Service (TPS) registered individuals received 1,752,149 calls from It's OK Ltd, according to the Information Commissioner's Office (ICO).
The crimes were committed between July 1 and June 1, 2020.
According to the ICO, evidence suggests that senior citizens were purposefully targeted.
The ICO added that unless a registered TPS user has specifically indicated that they do not object to receiving calls from a particular organization, it is illegal to call anyone on the TPS for marketing purposes.
The ICO has received complaints alleging that It's OK Ltd tried to mislead people by informing them that the warranties on their white goods had expired and pressuring them to pay for services they may not have needed.
The business made more than three illegal calls per minute on average over the course of the 11-month period.
The actions of this company represented a persistent and exploitative campaign that may have targeted the most vulnerable, according to Andy Curry, head of investigations for the ICO.
"Using pressure tactics, making false claims, and contacting people who have registered with the TPS is dishonorable behavior. ".
An 82-year-old woman was allegedly "bamboozled" into paying £194 for an extended warranty on her 10-year-old washing machine, according to a customer complaint.
A request for comment has been made to It's OK Ltd.