Sorry, that won't happen, what are we to become, a communist country?
Rents are what they are because people are paying the prices. And I'm saying that at the moment as a renter paying a little too much for my pad but I chose to do that - could have found somewhere cheaper but I liked this place. As it's close to where I'm working the premium is worth it for me.
Should we also force house prices to come down too by limiting what someone can ask for their home?
Think landlords are best left self-regulating to be honest. If all renters chose to rent through an agent with a good reputation that would alleviate the problem. They give you phone numbers of their people to call (or recommended trades) and things usually get fixed quickly. They will also handle giving people access to the property. A private landlord will try to get you to be there to let them in. I personally would not rent from someone self-managing their properties unless I can get verification that they are good landlords.
Missing the first months payment is not good advice. Not only would they be breaking the terms of the contract themselves it could also affect a credit rating/reference in the future. OP should as he said tore up the new changed contract or asked to renegotiate terms.
Problem is unlike many other commodities people don't have the same level of choice - they have to live somewhere - so the market doesn't reset the same way.
Something is going to have to give eventually - its getting ridiculous around here - houses that people bought not all that long ago at say 155K are on the market for 400+K due to the "investment" opportunities from renting them out.