Symphony Limited — Cooler making noise in a day after service

Address: Whitefield Bangalore Karnataka

I have called service engineer as fan was not working, he did something and everything was working fine, so we told to replace honeycomb part and paid him 975 = 500 for part and 475 for service. After a day cooler started making noise, we called several time but some new guy came and without seeing anything he started telling need to replace motor worth 2.5 k. We tried calling service centre number and there was no option to reopen request and it's all automated. We have paid service charges but still issue is not resolved and earlier person mentioned that motor is absolutely fine..I am wondering how motor is issue in a day, while pump is working absolutely fine. So unacceptable behaviour and so High charges but no service. Request help to look into this matter.