Just to make it clear:
On 4th of November Blue Juice went out of the marina and sailed to Ao Labu, Kho Yao Yai (no cleaning), she returned next day.
On 16th of November Volvo staff installed again the seawaterpump and switched of the batteries, as they say. On 17th your staff did the cleaning, as you say.
On 18th the engine was running early morning, on 19th I was arriving and found the batteries switched on.
Just facts.