I had a friend at work, who we'll call Jenny. I was 23 and had just split up with my boyfriend and so was moving out of our flat. Jenny was renting a bedsit and had been offered a job in another city, which meant moving a few hundred miles away. I had been planning to go and stay with my Dad for a few months while I thought about my next steps, but Jenny called me in a panic. In all the stress of taking a new job and securing a new rental in a different city, she had forgotten to give notice on her bedsit, and the only way the Landlord would agree to return her deposit (this was around 2003, before deposits were as protected as they are now), was if Jenny could provide a new renter to take over the bedsit, the day she moved out. It was all a lot quicker than I had planned for, but the bedsit was in a great location and I had been round once and the building was lovely and even had access to shared gardens, so I decided to take on the tenancy.
As I was going to be living alone for the first time, I didn't have any of my own furniture, so I asked Jenny to take a few measurements of the bedsit so I could order a bed and a small sofa, which she did. I ordered them to be delivered on the evening of the day I was moving in, the same day Jenny was due to vacate the property at 9am.
I headed over with a good luck card and small going away gift for Jenny at 9am on the move out/move in day, and to meet with the Landlord for them to inspect the property and for me to sign the paperwork and get the keys. Jenny was not there. A neighbour told us Jenny had been spotted loading up a van the night before, and had headed off in the dead of night, avoiding the Landlord (and me) altogether!
Once we entered the bedsit, the reason why was immediately obvious - it was disgusting! To this day I have no idea how she managed to get the carpet so grubby, the kitchen area so grim and even the walls were dirty! The Landlord was apologetic, but there was clearly no way I could move in that day - he got his cleaner in and I was finally able to move in 2 days later.
Once I was finally in, I rearranged the delivery of the furniture I had ordered, based on Jenny's measurements, only to find that she must have simply guesstimated, as there was just no way my new bed was going to fit into the space it was supposed to! I was very lucky that the delivery guys took the bed back, and brought me the slightly smaller version, using the £50 difference to cover the delivery and return costs.
Once settled, I was very happy in that bedsit for nearly a year, but I never heard from Jenny again, until a Facebook request about 10 years later - which I deleted! I was trying to do her a favour, but she cost me a lot of time, effort and money.
@JonHammFan - I would have felt exactly the same!