Who called from 3472497344

i received a message from best buy and it means that my entry last has won and i can claim $1000 gift card from best buy.

I got a text this morning saying same thing ,that i had won a 1,000 bestbuy gift card and left me a place to go online to claim gifftcard ................It came from this number 1-310-926-4565 .............I do not have unlimited texting and just would like to know how they got my number ?