I am afraid that you have very little options at the moment. There is but a finite number of things that you can do:
1. Pay the arrears and negotiate a new contract. Or negotiate a new contract where the repayment of the arrears is incorporated in the new rental amount. Whether this is going to work is going to depend totally on whether the landlord is going to accept your proposal or not.
2. You can decide not to move by the end of the month, in which case they will probably approach the court to obtain an eviction order. There is, unfortunately, precious little that you can do to defend this application, given that you have been issued with the notices as mentioned above and that you have not complied. Unfortunately, the reason for your non-compliance is not going to be relevant. You are then also going to be held liable for the legal costs of obtaining this application.
3. You can negotiate with the landlord on a date later than the end of the month by when you should be out.
4. You can move out by the end of the month. If the first or third option does not come off, then this would probably be the best option for you, since you would then save on the legal costs of the application for eviction.
I know that this is probably not the answer that you have hoped for, however, I hope that you can still get some value out of it. I try my best to provide you with a legally sound and accurate answer and however much it pains me, it is not always good news. Trust me when I say that I wish I could provide you with a more optimistic answer. If you have follow up questions before you rate, feel free to ask them at no extra cost. If you are satisfied with the service, kindly rate it positively