I need answers and my money back

I had a data contract for my iPad through Nashua Mobile. In 2014 Nashua Mobile decided to sell my contract to Altec Autopage.<br> (is this even legal??)I had a data cap set up with Nashua Mobile to prevent my data usage from exceeding the contract 2GB.<br> First few months with Altec Autopage I received bills for additional usage. I queried this immediately where I was told that their system don't allow for a cap on data contracts. Frustrated at this, I tried to accept this as it is also difficult to find out what your available data is for the month, as you have to contact a call center. Then all of a sudden in Nov '14 I received an email from Altec Autopage Limit Service to tell me that my account has reached a SoftBar.And there I have a data cap again!Wow!Amazing!<br> Dec'14-No Limit again<br> Jan'15-received an email to tell me that I have reached my limit.<br> Feb 2015-No Limit again<br> Mar'15-received an email to tell me that I have reached my limit Since then, no emails <br> Today I phone Altec Autopage.Once again, they tell me no limit can be set on data contracts.I tell them the whole story and all of a sudden their story change. Now I am told the the Limit Service is uncontrollable. WHAT???