Pathetic Service for mobile

I purchased mobile connection from xfinity and trasffered my 3 numbers and I have additional two mobiles recieved which I have requested to be returned as they have sent the mobile for which order was cancelled. I have made 9 calls till now and they send me email which has no return label, every agent tell a different story, no on has idea of what is going on ... 

I am now getting crazy on what needs to be done now ...