"We would just like to write and thank you for your fantastic service.
Within a day of agreeing the collection of our business waste we received a new bin and it was then agreed this would be collected two weeks later. As we had a build-up of waste you kindly moved the date to suit our needs and collected within two days. This of course happened at the point and time agreed. We also like your contract flexibility although we could see no reason to ever not use your service."