Public social manners

Hi all. I’m a foreigner visiting Iloilo. I’ve been here many times as my gf lives here. Last night we were at SM and walking outside. In front of us was a lady with her phone in her hand. She gets to the door and stops to send a message. With no way to go around her (as the other door was closed and locked) and other people behind us waiting, I tapped her on the shoulder and said excuse me. She promptly said sorry and kept walking. My gf later told me I should have just said excuse me without tapping her on the shoulder as it’s rude. I acknowledged it and realized maybe I shouldn’t have done that, especially since this isn’t my home country. Was I wrong? Pretty sure I was, but I also like to hear a local’s opinion.