Poor Business practice and dishonest dealing

Was telephonically offered a contract with I smart and accepted, I specifically requested a device with 32gb and a device was delivered on 29 November 2017. I opened the box to find it was a 16gb device and immediately returned the package. Received a call from Ismart asking why the device had been returned and explaining that I was sent the wrong device, Ismart lodged a mislead query. They called back the same day to say my query was rejected and I told them I disagreed and requested a copy of the recording which I was then told would not be done but they will arrange for me to listen to the call. A number of different calls from different agents explaining that I asked for a 32gb device and received a 16gb device, one agent even confirmed that they had both available and will get back to me. Today, 3 weeks later I receive a call saying that my query was accepted as the error was on their side and I will not be charged the cancellation fee. As a reputable business, one would correct the error by supplying the customer the agreed device instead I am offered a 16gb memory card to add to the 16gb device, I told the consultant this was not the same thing and will the monthly rate be dropped since I am getting a lesser device but Ismart is too smart to give anything so instead the contract is not effective when they have made a mistake but if you made a mistake you have breached a verbal contract and must pay cancellation fees.

STAY FAR AWAY FROM THIS DISHONEST COMPANY.