Contracts that benefits staff not the customer

I went to a telkom store in Greenstone mall on Friday 06 March 2020 to get a device added on my contract as I have lost the previous one. I was then helped by Nosipho Dube whom i explained to that i have a contract with telkom but i would like to add a device as i have lost the previous one. She helped me to get a device and she showed me the laptop and I signed a contract on their pad and thought I will read through it at home.when i reach home the contract was not mine it was a Mr Sebola so i managed to go back to the store on Sunday and returned the wrong contract and the other lady helped me by printing out the right contract. Reading through the contract I then realized that she did not add a device on the existing account instead she created a whole new account which now leaves me with 2 contract accounts and 3 telkom sim cards with 1 laptop and 1 mi-fi route. I then called telkom customer service and they advised me to go back to the store to report this to the manager and get this changed to migration instead of a new contract. I got there and explain to a guy who was working there and he kept on insisting it is my fault and I can't do anything i called for the manager whom kept on sending the guy to tell me there is nothing she can do i am stuck with the contract and she refused to talk to me. I don't need another contract hence i waited until I could qualify to add a device but I am being told i am stuck with it.