Mahindra And Mahindra — wiring and maintenance issue

Dear Sir/Mam, I purchased Mahindra Maximo Van in 2015 from that time every month I faced wiring issue or some other issue. Every month i spend some extra money except from maintenance. Last month i fully repaired and wiring in Sanjay Automotive Mahindra service center Gurugram and i paid 66, 500 Rs that time and they(service center) said this is fully ok and gave me 6 months warranty. Now again i face some wiring problem in this van and service center again make an estimate bill of 15000 Rs. I am unable to spend so much money every month.on that time your service center not check the wire and not solve the wire problem? so please help me for this issue because i am unable to spend so much money every month.