Advice for silver please :)

I main adc and usually play that(when i get it) but some games my support likes to just sit mid and leave me. I understand ganking mid as support is good and all that but only at good times. Like one game theyd sit mid against a lb for 2-3 mins while im left bot against 2 and they didnt even get the kill. What do i do in situations like that? If i dont move up to farm then my cs falls behind and i lose in gold lead, if i move up to cs i get attacked by 2 and risk dying. Also another situation, where like my support will stand like half a screen behind me. So i feel like im left 1v2 cause both their support and adc harass me while mines far behind me. What should i do? I ask them to please move up and im not mean about it or anything. I ask very nicely like "please move up beside me so im not 1v2ing them" and usually i just get insulted for it. So as an adc what should i do? Should i rely on my support to go half and half with helping me win the lane, or is there something i can do on my own to win the lane. I like to play aggressive but if i as the adc try to start harass/engage i just get attacked by 2. Not sure what i should do differently. So any advice is welcome :)