Panasonic — non trustable panasonic customer service centre

My panasonic smart vierra 42 inch led tv has stopped working after voltage fluctuation. Panasonic technician visited my place and asked to repair a part on the mother board and is a very small issue.

After 2 days, service center informed me that my tv is ready and will be delivered next day between 3 to 3:30 pm. I have also confirmed the delivery on the very day again but the tv has not been delivered.

Next day i have got a call and ask my confirmation if they should order the part which was very surprising for me. Anyway, i confirmed over phone but again on the next day i have got a call from the same service center that the part is not available and tv could not be repaired. They informed that they are going to return the tv.

Please help me to sort out this issue. How can i trust this service centre.