Landlord & Estate Agent Question

Hello,

I have 2 apartments that I rent out with two different estate agents (I wanted to see which was better but they are equally as awful.) I have had a tenancy change in each of the apartments the past year.

1. Estate Agent A - Increased their fees without telling me in writing. I was dealing with the agent on the phone and he conveniently forgot to tell me and I only saw it when their statement came through. I pushed back and they met me halfway on the difference. I was a bit too easy here I feel still.
2. Estate Agent B - They initially just charged a management fee and not a letting fee. I spoke with the estate agent multiple times over past weeks and he never told me about a letting fee but I just got his fees statement and there is a 950e charge for letting on top of management. He claims he told me over the phone but I know he didn't - he's gaslighting me. I received nothing in writing about this change.

In the above both instances they did this after the tenant had moved in making it harder for me to push back. Also they control the income/expenses so they have already "taken" the money from the income.

Anyone advise on what to do in this situation? You think estate agents would be better to landlords but they are scrupulous all over. The worst profession to deal with it.

Regards,

Kieran