Any two year standard agreement would have a one year break clause which would entitle the landlord to alter the monthly rent after the one year period has elapsed, so what your landlord is proposing is not unusual. Either party can also submit notice to terminate the agreement once the one year is up. However, since your communication with the landlord show that the status of the current agreement is sub-standard, then I would advise taking legal advice to correct the current situation as an immediate priority.