2 man premades ;(kata/yasuo's..)

so i had a premade team(2 man) i was bot, one of them mid(kata) / another top(yasuo) kata was against a blitz, well you know kata, so anyways she goes bot all the time and kills them after a while they start to camp bot , so what does kata do = farm, she doesnt push though, just farming so meanwhile blitz , yi jungle, quin adc , and a soraka supp ( ugh them heals) are pushing pretty hard, we keep asking for help ( me , karma support, and ww jungle) but they just ignore us , while they are talking to them selfs in another

language, i understand that you dont want to talk but atleast ping,blitz literally went bot every time because kata went there to get some kills and i was unable to farm up decently, because blitz camped.

it only gets worser though, so kata sees them all bot, and what does she do , she farms, still hasnt pushed her first tower, same with yasuo

until they get to the second tower, they finally decide to help, i was pretty pissed to be honest, i mean you are premade but that does'nt give you the right to complete ignore a 4 man team, while the jungler is forced to help while he cant jungle, and your just farming in lane, not even getting objectives.

its kinda funny though, its always a kata or yasuo (=°.°=)

so anyone who has had the same kind of people ?