I'm assuming this was an unranked, practice match; since they were able to choose you over and over again.
While it does suck to be bullied around like that, keep in mind practice matches are friendly, practice matches. You don't lose or gain anything, so you can at least take solace in knowing they weren't proving anything to themselves, or anyone else c:
Some people just can't win without feeding off of others in practice matches. Sad, but true.