new fridge and ac

About 2 months ago my fridge in my camper, which me and my wife and son live in, stopped working. we are currently using a small mini fridge but are unable to put much or keep any frozen items in it for meals. We are needing is $450 to get a new fridge at home dopot or lowes that will fit in my camper.  Last summer our ac went out on the roof and had to put 2 window units in, which dont work well . and if you run both at the same time blows the breakers. which caused my wife and 6 yr old son to have to leave during the daytime while i was at work due to the heat of summer and no ac/no power  . summer will be here soon and need a new ac roof unit for my camper which costs $650 .  i am unable to afford either one due to minimum wage income and I am asking for help . Thank you