If you create a servitor then neglect it, being a form of life like any other, something that wishes to keep on living, it will attempt to feed itself and grow, and that sometimes (I’d say, frequently) has negative consequences for the person who created it - that happens quite a lot.
Think of it as like bringing a puppy into your house, and giving it fuss and attention, and feeding it, then just slowly stopping - as it grows (and for the sake of argument, these are mastiff puppies, not chihuahuas) it will start finding its own food by any means necessary, acting defensively to keep itself safe and fed, and also doing whatever it can to get your attention.
The best way to limit this IMO is to set it free, giving it an alternate source of energy such as starlight or something, if you don’t call on its services for a set period of time, and to offer it freedom if it completes its task successfully, so it’s not just working for you but also for its own long-term best interests.
Place a condition that it won’t turn on you or harm any human, or whatever suits you, then set it free.
I don’t personally condone destroying any sentient servitor after it’s fulfilled its purpose, I think that’s un-godlike and cruel, but you can also create servitors that are designed NOT to become self-aware and conscious, which are like energetic mechanisms or software programs, and set those to self-delete after a set period.
Creating servitors (though I didn’t understand that term) is one of the earliest things I did as a child, so I’m speaking from experience of what’s worked for me, other people have different views regarding whether the lives you create are of value, but I see little to no difference between creating a phsyical life and a spiritual one, and also, I prefer releasing more spirits who have reasons to think well of me, and be potential future allies, than being a bit of a dick towards something that I myself have been as a god to, in terms of creating it from my own mind.