Straight Talk paid for cell phone service and continually had a phone that they could not keep activated despite my full payment Internet

I was a straight Talk customer for 4 months.  This was a horrible experience.  I paid thru autofill on time every month & still was without service for up to two weeks out of every month.  

I paid for a service that I didn't receive.  As a customer I fulfilled my obligations, but this company could only credit my account.  I was disappointed that they would not grant me the refund I deserved for at least the full month of service I did not get even after I paid it on time.

I thought perhaps it was my device which wasn't working correctly.  So I bought another tracfone and it turned out to be a problem from straight talks end.  Every month after my autofill date my phone wouldn't activate.. and so I would call them, put in a series of codes they provided me and it would either work --or not work.  

There were many attempt to activate with the company and it would get my phone activated, only to deactivate an hour later.  I spent a lot of time on the phone trying to activate my phone, only to find that it would not work the next day. I feel as though I was ripped off, robbed, mugged. 

There should be a class action suit filed against this company. Is this legal!??  When I requested a refund for one months service they said it is stated on their website that they do not provide refunds.  The problem is that they did not deliver the service which I paid for.  This sounds fraudulent to me.