Along the lines of petty revenge and prank rather than sabotage perhaps
but while on holiday in Portugal there was a very loud set of holiday makers staying in the apartments across from us. Now I was going out a fair amount, but I like a heavy night followed by a relaxed one: this lot kept the partying up every night. At a very loud volume.

And this annoyed me.

A couple of nights later, having clocked their number, and our phone extension, we went down to the pool (we being me and a couple of Irish lads I met), where there was a phone that connected with all phones in the holiday village. I am quite good at the ol' mimicking so my half of the following conversations was in perfect broken Portugese-tinged English:

Me: Hello, is this number apartment 36?

[i]The noisy twats: Yes.[/i]

Me: Hello madam, this is reception, I am afraid to say we have received some complaints about the noise.

[i]The noisy twats: What noise? We're not making any noise! Who complained?[/i]

Me: Erm, I shouldn't really say madam, sorry.

[i]The noisy twats: Right, well I can believe that, ok, but we're not making any noise.[/i]

Me: Ok, so if you could just keep it down, that would be great. Thankyou and goodnight.

Calling No. 38

Me: Hello, this is apartment number 38?

[i]Complete Random: Yes?[/i]

Me: Hello this is reception...
and same again.

I then called number 36 again, who were completely unbelieving, and asked again what number had complained. I relented and told them it was number 38: the lady then said she was sick of this as they weren't making any noise and she was going to see what their problem was. I tried to tell her we would "not like such a, how do you say, altercation". I then phoned back 36 and told them 38 complained once more, which was met with similar disbelief and anger.

We were ending ourselves at the pool thinking about them fighting, and then the phone went. We looked at each other, before I took a deep breath and said in my broken Portugese tinged English.

Hello, this is reception. How can I help you?

almost exactly the same voice replied:
No sir, [i]this[i/] is reception. Please stop using the pool phone.

At which point I put the phone down and we bolted, like true heroes. We were still ending ourselves though.

*Damn, tags don't work. I'll leave them to highlight what they were meant to highlight. Also feel I should apologise about length, and that less people should.
(Lannes, Fri 6 May 2005, 23:58, Reply)