Apartments Gave me 30 days.

Hi! So yesterday I had a jewelry box disappear from my bathroom after I had the maintenance guy in there to do some work. I went down to the office to let the office know and right off the bat they were very dismissive and rude saying there’s no way he could have taken it. I said some choice words to the lady after her basically calling me a lair. I called her fat (not too proud of myself for that) and didn’t use bad language or even raise my voice. They went ahead and let me know I have 30 days to move out because I was harassing her. Side note: They aren’t putting any sort of penalty on me or eviction notice. I have lived there for 6 years with no prior lease violations. Is this legal? Can anyone refer me to an attorney that can look over my lease and see if that’s valid reason? Thank you for your time.

TLDR: getting kicked out because I was rude to the apartment leasing agent. Is this legal?