mag safe making weird noices

Hi everyone. It has been like 2 days since I purchased mag safe for wireless charging for my phone. But today second day of purchase it started making weird buzzling type of sounds. When I stop charging my phone the sound goes away but when I want to charge my phone again it starts making buzzing sound and after like 3 or 4 minutes it stops charging by itself completly. Does anobody has same kind of problem in their mag safe?