Not happy at service

I was contacted for a contract i took up the offer , i then called back the same day to request for one of the devices to be swooped i was advised that only once my admin fee is deducted , it was deducted 2 days later i called i was told that the device i want is not available and someone will call me to swop the device , i still haven't got a call . on Monday i got a courtesy call saying my devices will be delivered i ask again for the one device to be swooped the gentleman said he will transfer me only for my line to be cut. i need urgent assistance