No 3G signal

I purchased a 25/25 G bundle on 18.04.2015.checked the coverage in shop and was happy with the map detail<br> just to discover at home , the map is not correct3g signal is the one of a Telkom competitor that does not allow roaming on their network ref ***4 5th may Telkom ...we investigate. little or no response got a second ref no205493 17.06. 2015 ...we investigate your querie .....is this really the best Telkom can do? is Telkom just ripping of costumers with no coverage? please could I get an speedy answer that answers and accepts Telkom responsibility towards costumers.