Dell India Pvt Ltd — don't provide proper servise

On 15 step 14 I purchase a dell veneu 7 tablet from dell authorised dealer in Patiala.service tag no is J0CBJZ1. AFTER one month it showing some problem like screen flash out and auto shutdown. Then i send it two times to service center in Chandigarh thought dealer. Both time they kept my tablet for almost two month but the still showing. Then I visited 4 times to service center Chandigarh again and again .but problem is still in tablet.I send many emails to Dell customer care in company also and told them to replace but they refuse to replace it with new one I visit 8 time to Chandigarh one to gave tablet and one for received it and I spend almost 2500 on fright and done some other petty expenses .I also gave 200 to dealer as courier changes. And waste 8 days in journey I want refund my tablet amount with expenses and compensation also. Tablet purchasing amount is 12500, fright exp 2500, and petty exp around 600 . I want full compensation of 30000 from dell company.please sir help me to get my refund