I think I stopped reacting "at first" to all messages, emails or calls that I receive, which contain the following message: "Only for you", "Only today", "Free"... and similar.
The only tricky thing is that the brain has to be constantly on, to remember where you were and what you were doing (like you remembering car insurance 🙂).

What they did to you probably wouldn't hurt you at first, unless it's a premium number, so it costs you a lot to call.
But by calling that number, you would draw a target for yourself, announce that you are active (for some more advanced attack models), that you are responding to this type of message, that you really have an account on cripto.com that is connected to that number.
And great damage could be caused if you called them and left your voice, perhaps an account number, pin code or some other personal information on a machine...

Even if someone I know personally sent me an SMS or mail with some "non-standard, not everyday" request, I would call him (or, even better, meet with him) to check it out 🙂