Yes I did. But the answer was disappointing. I was informed that Anker won't sell me a replacement. Moreover, they didn't even give me any suggestions for alternatives. I think the problem with the NB10's design is that if I lose an ear tip, I need to buy the whole system again, but I won't make that mistake again. Quite disappointed even though I liked the device. Anker needs some way of replacing ear tips.
Thanks for the responses.