You can try to speak to some of popular paediatricians here (https://www.doctoroncall.com.my/find-doctor/kuala-lumpur/doctors/paediatrician).

I did a video consultation together with my daughter, but based on my interaction with the customer service agent, you can also make a physical appointment. Having said that, perhaps you can check with the customer service team with regard to your receipt question.

Hope this helps.