Medical expenses

HI friends. Most of you know I am a diabetic and have been now for upwards of 30 years. I am insulin dependent and use an insulin pump.  I have been on stability since February of 2002 and I receive  Medicare insurance.  As a result of my diabetes have many complications which require me to see a multitude of doctors.   I was hospitalized in October due to cellulitis  and MRSA, I have stage four kidney disease, heart disease, congestive heart failure, weakness and nerve damage to both hands and feet, I recently had cataracts removed from both yes and I suffer from retinaapothy just to name a few. I am not asking for pity but I am asking for help I have had tests and doctor visits almost non stop for months and I can not keep up with my 20% of these bills.  I feel like I am drowning. The company I receive my insulin pump supplies from is suppose to Bill me after each shipment  instead I get one large bill in November that I can't possibly pay then they turn me into a collection agency and won't send me supplies now until they are paid.  I have more up coming appointments and tests and frankly I just want to stop them all until I can get this under control. I am asking for help. I am asking for prayers for a resolution to this problem. Thank you
Phyllis Beggs-Arnold