Bought a New Car! Help!

Hi all! I recently financed a new car with Toyota and I “thought” I had bargained for the MSRP price rather than all the extras the vehicle had listed. The General Manager assured me that the price I would get was the MSRP price and told me the extras would not be included (LoJack, Alarm, EPP - Paint Protection). I signed the contract and I am turning 2 weeks with my new car. I was looking into my contract and I did not notice I signed a contract with the optional extras already added in. Is there a way to cancel or remove these services if they haven’t been installed in my vehicle. I understand I signed and it may be too late but I would really appreciate your help since it did add an additional 4k to my loan. Thank you!!