Complaint Review: United Health Care Ins

I allowed United Health to take out from my social security check 39.00 A month for two years for future dental work. When I went to them to use the money saved I was told I was paying premiums for Free Ins which is United Health insurance.

I request my money back they refused to even acknowledge it but social security has records of each transation I just want what belongs to me I'm A senior on A fixed income need my money thank U N advance.