求助：美国某大/中厂开工两周通知international intern 55%paycut

楼主家在加拿大 在美国读研
今年夏天本应去在美国的某大厂（or中厂？）实习

四月中 hr说
We will keep business running for our internship program on a virtual, work-from-home basis as weve been doing as a company for the past few weeks.
Finally, I realize that you may have included your permanent home address in the onboarding form. If you are in a different location from your permanent home address, please respond to me and provide the physical address of where you are and will be this summer. We have some important things (such as your Intern laptop!) to ship to you and we want to ensure that all items are shipped to you with no issues. If you have included your current mailing address in the onboarding form, you have no further action!
我随即回复： I am wonder if I will be allowed to work from my Canadian home or am I required to be physically present in the states.
同一个HR: You can work from your home! There will be no interns physically in the office. Is your Canadian address the one that you listed in your onboarding form?

在这个之后我将系统里的home address改成了加拿大的地址（为了收电脑），还特意与另一个（非campus recruitment）hr确认过。我想着既然他们告诉我可以了也没有提任何问题，我就放心大胆的退了租回到了加拿大。

周一，开工整两周的时候，我突然被告知我需要被转入Canadian payroll （因为系统内的地址）而新的payrate （算上汇率）比原来少了55%。与hr交涉了很久，并告知了我manager，今天我们三个人meeting，同一个hr态度非常恶劣，商量无果。不过在这个公司，除了hr，实习体验真的非常非常好，大家都很nice。我manager甚至把这件事告诉了ta的老板以及老板的老板，并帮我与管我们部门的senior hr去交涉。

在我看来，这件事就是hr的失责。周一与hr刚开始交涉的时候她说："I wasn't actually aware until the payroll team reached out this week blah blah blah"。但今天hr的态度就完全是踢皮球，她说她不会负责任因为她说 因为我recruited from an American school，所以我以为我只是visiting Canada。但我觉得当我被告知可以"work from my canadian home"的时候，我的理解就是整个internship可以在我家完成，而且当时已经出来了google paycut的新闻，我一些加拿大同学本该去美国实习的也收到了updated offer (pay * exchange rate)。所以对我来说，我认为这种信息是应该由HR来告知的，不然我是完全不知道在covid大环境下，不在美国就要comp adjust。

我的问题是：
1） 对于以上这个论点，大家觉得谁更有理？我是否有表达传递出我实习期间打算在加拿大wfh这条信息
2） 现在manager帮我去交涉了，如果交涉无果（很有可能），我还能采取什么行动？就像google paycut报道里一样, I think this is a very unethical move and I am being taken advantage of。

另外一些相关信息：公司里很多全职也暂时搬回了加拿大，工资不变。 另有几个intern和我一样情况，其中有一个因为疫情回新加坡的实习生在开工两周前收到另一个hr发的updated offer，ta做为一engineering intern目前时薪$15。

1）都有责任，hr的责任大一点
2）nothing much. 你随时可以quit

单算数字的话哪种对你更合算?
留在美国wfh: US pay - US rent
vs
留在加拿大wfh: US pay * 45%
然后你可以算下总共差多少钱, 再决定该采取什么行动以及闹到什么程度?