Do I have to be at home for engineer visit if......

At the moment my 250Mb broadband service is running under (but stable) 100Mb download speed but an as allocated 25Mb upload speed again stable, since there was an outage, or at least since I had to reboot my router as there was no internet service last week.

In the first sentence you tell us you have a VM service, you omit to explain how the 100Mb/s figure was gleaned.
Then in the same sentence you tell us you don't have a service.

What an utterly contradictory message.