I just did the most embarrassing thing in the shop

BASICALLY I TRIED TO BUY A DR PEPPER AND THEN HE WENT YOU CAN GET 2 FOR A POUND AND THEN I GOT SHY AND WENT NO ITS OK ILL JUST GET THIS ONE. AND HE SAID TO ME ARE YOU SURE AND I WENT YEAH THEN HE LOOKED AT MY SISTER LIKE WHAT IS WRONG WITH THIS GIRL AND I TRIED TO EXPLAIN MYSELF AND MAKE IT BETTER THEN I WALKED OUT BUT I SMILED AT HIM. I CAN NEVER GO IN THAT SHOP AGAIN