Wrong server?

I was being matched in SEA server when I would get better ping in SA(Indian) server. So, I did some research and someone told me to contact customer service. And, so I did. I filled the form and waited for some hours. Some guy(I don't know if I can say his name) answered and asked for my device model. He said something about getting the technician to change something (I don't remember). After that, he told me to wait some time and wished me a good day. I waited for another hour and opened the game excited to play with good ping but when I hosted a lobby, the ping was worse. Before, it would be stuck around 120ms but now it was 300ms... I thought this was a visual bug so I played a brawl match just to be sure. I was matched with Mexicans and got constant 300ms... Can someone help me?