Anyone experienced this

I hate my company so much, they were fine until I fell pregnant and had my baby, I'm supposed to start back on the 13th Feb, it has been a nightmare the whole time, I genuinely think their doing what they can to either make me quit or a reason to dismiss me. Companies are cruel and heartless I swear by it. I have been paid crap maternity yet they expect me to pay out £800 of childcare for one week for three children, two are off school and one is 6 months.

They have refused to confirm my request of not picking up extra hours or be out on a zero hour. Then they said my leave on Monday is personal which it isn't it's medical,let alone the fact I don't work till 4pm my appointment is in the day. They ignore what I said about training and still say I'll see you at training etc.

They said I need my training or I can't care,yet I am ok to work the Monday before.they didn't even consult me about the training days just booked it and emailed me telling me these are the days I'm booked in for. Told me they have accomdated me. Then they want me to do a 9an till 4 pm training and then straight to work 4pm till 22:00pm. They were quick to respond to my first letter,yet have ignored my second one, I have resent it again today, they are unwilling to meet me in the middle or help me out, I have had to ring my drs as this has caused me so much aniexty,stress and affected my mental health. I'm waking in the night because of panic and aniexty attacks. I have spoken to a legal person and I have resent my previous letter they have ignored them it's a grievance and then it will be me suing them and making the mo and news paper aware of what kind of company they are and how they treat their staff. They have made me feel guilty and sad in my last few weeks on leave and that I shouldn't be allowed to have another child because it affects them,they are trying everythung they can and think they can push me about and I'll do as they say, I'm contracted 16hours a week. They wanted to put me on a zero hour just for changing two days which didn't drop my hours below 16 at all, it just made it easier around the children and would cost me less in childcar, .do I seem out of order for my responses I am feeling really low and bullied, like a slave 🥺 I am in the UK

I'm looking for a new job it's not easy ATM either to find someone to take you on after having baby