I canceled my entire service with ATT within 14 days of switching was was billed for full month and over the price of the plan selected
I decided to try out ATT as a cell carrier, but the coverage area at my house was worse than my previous carrier. I went back within 14 days and canceled the service because I could not make calls from my house with ATT. I received a bill 2 months later for full monthly service even though it was less than 14 days. They did however prorate my auto bill credit to reflect a partial month. On top of it, the full month service was for a higher service than I selected. Total bill came to about $130 per the lowest 4gb shared plan they had. Beware of ATT and their so called coverage map.