Bell Canada. They have salespeople doing door to door. They also "partner" with landlords to setup little kiosks with salespeople in the hall of big buildings. Like, you're getting home, pass the RFID lock for tenants only, then there is a Bell representative waiting for you next to the elevator.

But with Bell it's not just their marketing. Once they sell you something they change the terms and/or charge you a different amount than what was agreed.

If you discuss this with one of their salesperson, they will claim that Bell has changed and promise everything will be fine this time if you take a new contract with them. But spoiler, they don't change and are always just more aggressive with their marketing.

Sometimes I feel a bit bad for the salespersons because they are often immigrants or young people that have not been fooled by Bell yet. They are enthusiastic but end up getting told to fuck off by people that have experience with Bell. I'm usually polite but very firm with them.

EDIT: Same with Hello Fresh. I have never used them but since some salesperson knocked on my door to try to sell me their services, I will make sure to never buy anything from them.