Being Billed for Service after Cancellation and After transfer to another carrier.

Until recently I had an AT&T cellular account and hotspot for two cell phones.

Reception in my building was poor for several years and i finally switched carriers.

I had no contract and owned my phones.

I ported the phones to the new carrier on Feb 1 and Feb 4 2018.  I began active use on those dates and have telephone records to show this.

I called Customer service and cancelled the Hotspot and accepted the fact I had to pay a $134 cancellation fee.

I understand that many utilities have a policy to advance bill.  AT&T does this.  They charge for the next months service in a current billing cycle so they effectively have a deposit on the services to be provided.

I was charged in the cycle ending Feb 4 for the Period from Feb 5-March 4.

But my service was transferred so I have been charged in advance for services AT&T cannot render.  So I should be refunded.

The Manager on the Customer Service line named Epigmenio tells me AT&T does not reimburse for these services that that are unable to provide.  Yet I paid far all of the services i received.  So essentially AT&T is swindling me and others by advance billing us and then not providing services.

[Edited to comply with Guidelines]

Thank you,

Bruce