How Do I Stop Friends and Relatives from Taking Advantage of My Streaming Subscriptions?

Hey Reddit, I’ve got a bit of a problem, and I’m hoping for some advice. I pay for streaming subscriptions like Hotstar, SonyLIV, and Prime Video all on my own. But the issue is, my friends and relatives keep asking for my login details. When I suggest that we share the cost and buy it together, they’re not interested. Then after some time they’ll say, “Oh, I just need it for this weekend” or “It’s just for one show.” I give in because I don’t want to be rude, but then it becomes a cycle. When I log them out, and then I get calls like, “Hey, I need the credentials again!” It’s honestly exhausting. The thing is, I find it really hard to say no. I don’t want to come off as selfish or cheap, but I’m starting to feel like I’m being taken advantage of. Have any of you dealt with this? How do I set boundaries without ruining relationships? Any advice would be appreciated! Thanks!