I don't that sort of attitude either. If it wasn't for cleaners, they'd have to clean up after themselves. I've only had one cleaning job, in the States, and I never experienced anything like that. It was for a company that makes CNC routers. My pay scale was the same as the lowest of the guys building the machines, but they were still specialists in what they did and made a great wage, so for someone cleaning in air conditioned, carpeted, comfortable offices, it was an insanely great wage. I also had the best insurance of my life. I was treated with respect and thanked daily by at least a few people for what I did for them. The CEO/owner of the company thanked me every time he saw me, spoke to me like I was anyone else in the company, and treated me with the same dignity he did his vp of the company. A lot of them gave me Christmas gifts each year. Sure they were smallish, more token gifts than anything, such as Christmas ornaments or figurines, because they knew I collected cows, but it was touching.
I have heard people talk down about 'cleaners' saying the word the same as they'd say 'vermin', while here, and it just makes me want to choke them. There seems to be a lot of a 'better than you' attitude, at least in my area, here. I've noticed how many people, even teenagers, treat people in shops as if they are inferior too, because they are in a position to serve them, therefore they are beneath them. It is truly sad that people treat other humans that way.
I hope you find a job that makes you happier, where people treat you with the respect you deserve.