u/ConsciousAdeptness98

I had ordered 500ml of Nandhini ghee and had used it the same day to prepare something. The taste felt weird but we didn't suspect the ghee. But the next day when I tasted the ghee, we found that the taste was really bad. Raised a complaint on zepto but they said it should have been reported within 24 hours. I raised a complaint with Nandhini(KMF) and these mfs are so incompetent that they would call me and disconnect it within a second so that I won't answer it. I emailed again and they called and said they would report it to the concerned regional office. And that mf calls and addresses a wrong person's name so that he doesn't have to deal with it. I don't understand how these incapable and incompetent mfs even get a job.

How and who do I complain about it against both zepto and Nandhini?

I (27M) joined this small company 6 months ago. I like to keep to myself and I barely talk to anyone except 2-3 guys in the office. But there is this tea supplier/office help who is taking advantage of my silence and spreading bad rumours about me. I know I can approach the HR but it would come up as I was scared to confront this guy myself but at the same time I don't want to create a scene at the office. How would you guys suggest i deal with this?

Tldr: need suggestions on how to deal with a office help spreading rumours about me.