Good Afternoon Janice.  I received your bill yesterday thank you and have just done a bank transfer for you. 
I would like to say a huge thank you for taking the time whilst on your holiday to arrange everything for me, much appreciated.  I would also like to say what a great bunch of men you have working for you especially Richard, he is a credit to the both of you and was obviously taught by the best 

.   Once again many thanks. 
Kindest Regards Sarah x