data on go and Mondo

Recently I took a contract with Telkom via their partner Mondo. On the call I was told that I can be able to transfer data from on telkom sim to another as the were giving 10gigs of data. I have a telkom sim but when I try to transfer data from the sim card I got from Mondo it doesn't allow. I then called telkom and they advised that Mondo issued me with data on the go sim and it won't be possible to transfer data to my telkom sim. I then called Mondo as this was not explained to me but they are also unable to assist me with the recordings of the call were we started the sale. I don't think it was a smart move on my side to actually go in business with Mondo by we learn everyday but unfortunately the relationship that I had with telkom for the past 12 month have to suffer