feeling isolated

A few months ago, Hospice told us that we couldn't leave my grandparents alone at all. I guess it was because the nurse came a few times when I wasn't there. Once a week, I would go to my best friends house for a few hours, or I would run errands, grocery shop, whatever needed to be done. They were just worried about my grandfather being there alone to take care of my grandmother. After that, we sent them to the Hospice house for 5 days respite care. It was amazing because it had been so long since i had a full day to do anything I wanted. My dad is adding a room to his house for my grandparents to just get everyone under one roof. He got a loan from the bank and is just waiting for the lawyer to approve it. He said that as soon as it goes through, they would hire someone to come in a couple days a week to give me some days off. But, he said i could take months for the money to finally come through. Then he said that he might just have her come one day a week. I have been so burned out lately, I just don't even care anymore. I can't get to sleep at night, and when I fall asleep, I don't want to wake up. I wake up to turn mama and when the bathing lady comes and then go back to sleep. I sleep until 2 in the afternoon sometimes. I know that I have things to do, but I just cant seem to find the motivation. I can't see my best friend or anyone else until he hires someone else. I used to call all of my friends and family when I was feeling down or just needed an ear, but it just seemed like they were tired of hearing the same old story. I cant talk to my dad because when I do, a lecture usually follows, or him telling me how he had it much worse before I came on the scene. If I tell him that I am overwhelmed then his response is "well, if you can't handle taking care of them, then I can find someone who can." One I can remember specifically was " If you don't think you can take care of them, then you should just get your ass back to Charleston" So, yeah. He has no clue what I am going through or how I am feeling. I just feel so alone all the time. When I try to talk to other people about it, they just don't really know what to say and I don't want to be that person who complains all the time so I just keep it inside. So, I will continue to try to be strong until I can have a social life again. It's just so hard to go day in day out and not talk to anyone, sure I talk to my grandfather, but he is super religious and I am not. He is 95, so we don't really have much to talk about. We probably talk about my cat more than anything. haha I am usually okay during the day, but the evening/night is just depressing. Anyways, if anyone reads this, please share your experiences on how you got through being alone as a caregiver.