opinions? :/

I'm writing here because it says parenting and FAMILY.. And i guess this falls under that category... might be long .. sorry lol.. I had my son 3/18/16 im a single mother.. i have done everything by myself! My sons father kicked me out 4 days be4 xmas 11 oclock at night with absolutely no where to go I stayed at my little brothers dads house for 2 days and then left the state ( LITERALLY my only option) well after i left i tryed to keep in touch wit my sons dads always ended in a fight!! ALWAYS!! after i had my son my sons father mom (grandma) send me 50 bucks i got dipers n wipes and a few cheap bottles. then wen my son was 3 mnths old his dad sent me 3 outfits ( witch 2 was to small) and that is legit alllll he has helped! I have offered to pay his way and his gf to where i am and he said no i have told him he can video chat with my son whenever he wants but only if it's a constant thing not a pop in pop out thing n he stil says no well a few days ago me and sister was supposed to go for a funeral out there and i told him well things didnt go as planned n I felt bad n he asked for pics of my son so i did ( this is the 1st time since my son turn 3 mnths old) n we made a deal that he would try more and that he would video chat my son this morning for the 1st time well once agian no call no message no nithin.. My question is should i even try ne more? should I just block him and say fuk it or give him another chance!?! opinions please!!