Superior Transmissions, Inc.

I brought my car in two weeks ago and they told me the part would cost 25$ and now it's costing me 2300$
My car stopped working months agoI brought it into superior transmission and my car has been there for two weeksThey called me days ago saying they might have to build the transmission and it would cost between and dollarsThey called me days ago saying all they had to do was replace the pump inside the transmission and the let only cost around 23$When I went to go pick my car up they informed me that I owed roughly 2300$ because they reubuilt the transmission and they refuse to release my car to me until it's all paid offI talked to the manager and he said it was a miscommunication problem and that I will still have to pay them the rest of the money until the balanced is clearedI have already given them 500$ today