B2 - An email giving reasons

We've hit a big problem completing the video which for your product launch

...but I assure you that the video will be ready by next Friday at latest.

...even if we get back to work on tomorrow, which is really worrying for everyone concerned.

I'm really sorry to tell to you, but due to unforeseen circumstances, ...

I apologise for any inconvenience have caused.

Apparently, the electricity could be off for several more days so it's not higly likely that we will be at least three days behind the schedule.

The background scenery it won't be exactly as planned, but this means that ...

Some of equipment was damaged during the huge power surge.

It's highly likely that we will be at least for three days behind schedule ...

I therefore propose that we travel to another location to complete the filming. If we will do this, there'll only be a 3-day delay.

At breakfast time this morning there was a major electrical failure in where we ..

but this means that the video will be very ready for the launch.