George's medical expenses

Hello my name is Dorothy Stoffel and in December my son George was diagnosed with a tumor in his C 4 vertebrae  called langerhans cell Histiocytosis. Fortunately this form of cancer is very treatable and with chemotherapy the tumor has decreased in size and George is doing great! Posting this go fund me page is extremely difficult for me ,I'm not the type of person to ask for hand outs but the medical bills are overwhelming and I'm getting harassed demanding payments for medical bills I just don't have the money to pay. He was even denied an MRI because I already had a balance with that clinic and they wouldn't perform the MRI ,unless I paid at least half of my previous balance .  I hate being in a position where I have to choose between paying my morgage and feeding my family or making sure my sons medical bills are paid. This is extremely embarrassing for me but I don't know what else to do. Before all of this happened my husband Matt was working a lot of over time just for us to get by and now I don't know what to do! I'm so depressed  and I feel like I'm letting my whole family down because I don't make enough money to take care of them! I'm so grateful that George is getting better and for all the support from family and friends but this is so much more than I can handle.