I usually don't answer random calls unless they message me first and if I know him/her I'll immediately answer the call.
I too share the same practice as you, avoid random calls, especially from numbers I do not recognize. If the caller has something serious to discuss with me, they usually text first, explaining why they are calling.
One purpose of my saying this is to warn you Maybe many are familiar with this type of hacking, and some are hearing about it for the first time. Most of us understand these calls, but we talk too much to be a little naughty and have fun. Many people think that there is information in my mobile that can be hacked. But one thing we must always remember is that any personal information provided by others is enough to annoy you. So if you get such a call hang up without saying anything. Hackers are using hacking methods, so be careful yourself and warn others.
When it comes to security, one needs to take great care with unknown phone calls. If you use a number associated with your bank account, trading account, or any other vital data, I would advise against answering calls from unidentified numbers to avoid becoming a target for fraud or being tracked down.