Cooling fan will not shut off did a little research fan needs replace is it true

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my wife bought a 2002 mini cooper she bought it used with 130,000 miles and it has been a money pit since day one. First week she took it down to get oil changed. apparently the housing for the oil filter had to be changed to a new and improved bracket. the oil filter that the car was made with no longer was made $500.00 later and new synthetic oil and she came home. I thought they had got to her. A little rechurch and they were right . next the manual trans began popping out of 4th and was hard to get into reverse. Finley down shifting from 5th to 4th it popped out and wouldn't go into any gear. cadistrophic datinachion $3,500.00 and the trans could only be rebuilt. Recall on power steering and tire pressure indicator. Now Both Windows have stopped working. Pass is the regulator drivers window is the motor. Authorised mechanic wants $1,000.00 a side to repair and just yesterday the cooling fan was running when i shut the car off 4hr later i found it running still I had to unplug the fan to shut it off. I've done a little research and they claim that a sincere has gone out and the hole fan will have to be replaced because its part of the fan another $500.00 will it ever end. What seems to make the problem better or worse? never changes fan keeps running How long have you had this problem? a cupple days