Sony — laptop screwed up by auth service centre of sony india

Address:

Delhi

i had forwarded the sony vaio for repairs at the karmapura service center for repairs. they checked and told me that it can be repaired and would just cost 4000/ . than after two days the estimate was taken to the 12000 and i was told that the mother board needs a change .
they have kept the laptop with them for 1 month and after one month they have revised the estimate to 38000/ and tell me that motherboard needs to be changed alongwith the cpu and heat sink. when i inquired about the laptop today i was told it is in the service center and that service center was in kirtinagar jail road. when i inquired in the kirtinagar service center i was told that they recieved the laptop on 6th may and 7 may they have told the estimate of Rs 33500 as the cpu and mother board are not working. and condition of the laptop is so bad that it doesn't look like a sony laptop .
i had sent the laptop from Jorhat assam and spend few thousand rs on just transportation of the laptop. Mr Rajat of the service center told me that they have been interacting with mr Ashish through whom i had sent the laptop.
they claimed to have purchased the motherboard from banglore and than they told it can not be fitted in the laptop because it is not supported. when the laptop reached the service center in kirtinagar they told that mother borad is not working.
question1 can i take them to the consumer court for harrassment and screwing up my laptop.
question 2 will the company repair the laptop free of cost since their auth showroom cum service center has screwed it up nice and proper.
question3 who is good advocate for this case and can get me proper compensation for the harrasment and repair of the laptop.
question4 how can a motherboard received from bangalore not fit in a laptop when they are model specific?