紧急求助一个租房的问题，谢谢！

在温哥华租了一个零售商店，合同上签写明的是600尺，计算也是以1120尺计算的房租， 但是后来发现面积没那么大，查了一下合约后面的所附的平面图，按上面标明的尺寸算出来也只有720尺 。好像是将邻居的一部分面积算进来了。向房东提出来，房东不予承认，说协议里都有说明。现在欠两个月的房租，本周不交就要采取行动， 不知道会采取什么行动。会不会将东西没收扣押？直接赶出去。

查了一下协议，有如下条款，也看不懂什么意思？难道房东就可以随意改变租赁面积吗？ 面积多大就在那里是不变的啊！不知道怎么办了， 非常感谢！

1.21 Rentable area shall mean the total area expressed in square feet or its metric equivalent set aside by the landlord for leasing to tenants of the building, as may be amended by the landlord from time to time. 1.25 “The tenant’s Proportionate Share” shall mean the percentage calculated to the second-decimal place and which percentage is equivalent to a fraction having as its number the Area of the Premises expressed in square feet or the metric equivalent thereof and having as its denominator the Rentable Area of all tenants, expressed in the same form of measurement as the numerator, provided that the percentage shall be changed in the event of a change to the Rentable Area or the Area of the Premises; and shall mean the percentage calculated to the second-decimal place and which percentage is equivalent to a fraction having as its numerator the Area of the Premises expressed in square feet or the metric equivalent thereof and having as its denominator the Rentable Area of the 2nd Floor office tenants expressed in the same form of measurement as the numerator, provided that the percentage shall be changed in the event of a change to the Rentable Area or the Area of the Premises; 7.20 Metric Equivalent. Whatever there is any reference in this Lease to a measurement or any area or the requirement for a measurement or calculation of an area any such measurement or area may be expressed in either units of imperial measurement or their metric equivalent as published by Canada Mortgage and Housing Corporation or any other agency of the Government of Canada designated by the Landlord.