I'm in Hangzhou with my husband, we took the bike cards yesterday, I use the card today but I had a mistake

1. First I think I left the bicycle without locked, then I confused my husband's card with my card, so now my cards don't work what can I do? because all bicycle station there isn't nobody speaks english and all istructions are only in Chinese
Somebody help me, please, because if I come back in the pubblic office where I took the cards I think nobody understand me

Thanks