Do we have evidence to prove that the Pyramids in Bosnia were constructed 10,000 years ago to even 24,000 years ago?

They are just ordinary mountains. A few cranks (most definitely not archaeologists) have been trying to convince people they're pyramids for years now, and unfortunately had some success within Bosnia, but there is zero support for the theory amongst actual archaeologists and never has been. There are no chambers or cut stones. The pyramidal shape is the result of a well known, natural geological process and there is no evidence of any sort that they have been artificially shaped. It's pure, unadulterated pseudoscience and unfortunately in their quest to "prove" their theory (by digging ridiculously deep holes every year and misinterpreting natural fissures in the bedrock as "cut stone") the pyramidists have damaged genuine archaeology on the mountains. So if your dad is interested in Bosnia's heritage you'd do well to warn him against supporting these people.