I am glad to receive your remittance note, but the payment has not arrived in our account yet, please make sure you have send out the payment without problem.
其实，这样说起来不太可以，好像是怀疑人家汇钱上有问题，既然已经给你汇款底单了，不如改的客气点。
I am glad to receive your remittance note, but the payment has not arrived in our account yet, once the payment has been cleared, I will let you know asap. Meanwhile, would you please check with you bank to make sure there is no problem.
就是说，我知道你汇出钱了，正在等到帐。但是为了保险起见，是不是请你也去你的银行看一下。