Started with 4 lines, 833 credit score, told to port one out to add another, did that, NOW only 3 lines???

I am a brand new customer as of November 11th.  I activated home internet first and then transferred 4 lines to Xfinity Mobile.  No issues at this point.  I treid to add a 5th lines and got the maximum lines error.  I chatted with a rep as I wanted to get the entire family on Xfinity mobile and add a new (transferred line) for my son.  I was told if we ported a line out (temporarily) we could add a new line and still have 4.  Then I could port that line back in for 5.  I did this and paid another service $25 for month.  But I still couldn't add a new line.  Now I am stuck with a limit of 3 lines after being lied to by the rep and the advertising.  The limit has NOTHING to do with a credit check.  They told me to call Equifax.  I knew it wouldn;t do anything, but I did anyways.  Equifax said there was not a credit freeze on my account and my credit was perfect.  We ported my husband's line out onlky because they said it would work to add my sone.  It was supposed to be temporary.  Now we are screwed and have service at 3 providers for 5 people.

Is there anyone that can actually help?  I see posts about people that cannot get more than five lines.  That is all I want.  5 lines.  Half of what is falsely advertised.