I've been trying to change coverage from Kaiser to united health care since oct...

I've been trying to change coverage from Kaiser to united health care since oct **, ****. Each and every time I call Md. Health connection they give me a different answer as to when my coverage would change to United Health Care from Kaiser, only to be disappointed by giving me a later date. I just got off of the phone with one of Md. Health Connection supervisor she gave me a number (***) ***-**** claiming to be to United Health care. When I call the number I was more disappointed because the number was a disconnected one. My name is Ronald Hamilton my phone number is (***)***-****, my address in ***** Castle Blvd apt. *** Silver spring Md. my Email address is *****@***.com. I doubt that anyone that read this will do what they was (HIRE) to do and respond. All I'm trying to do is get some assistance but that must not be what they do they. Ronald Hamilton