Motorola Solutions — moto e4 plus complaint unattended for last 4 months

I purchased moto e4 plus on july 24 th and from the first day itself phone was having issues, i given to service centre and they have done software update but still the problems hasnt resolved. After that i had given three times to service centre but still they couldnt resolve my issue and they have asked me to contact motorola customer care. I have been trying to contact with them for the last two months. Still they will tell that our higher team will resolve the issue with in two days and never bothered to contact me even through mail or by phone. Its been pathetic service from a renowned company like motorola. Iam planning to put a file against motorola in customer court.