Very Angry Customer

I made an application of which was approved and but when i recieved my contract the terms were not what we agreed on. i contacted the Lady who was helping me by the Name Ms Lebohang Mahlo, this request was made and approved on the 25th of March 2019, on the 29th March 2019 money was deducted on my account of which i have made peace with. all iam asking is for my contract to be rectified from a period of 60 months to 6 of which was what we agreed on. i have been sending back to back emails messages and i have been totally ignored. including the department that sent me the contract. no one is replying to me. how i do not want money to be deducted for 60 months its a long period i want 6 months as per agreement and i want it on paper not by a word of mouth.