When I was a JW, I had an experience that caused me never do business with JWs ever again, well two, but I didn't learn my lesson from the first time.
The first time was when my husband and I were first married. Just before we got married, my husband was living in a cozy little apartment renting from a fairly decent landlord (a worldly woman). But we were convinced into moving into this other apartment, owned by a JW elder. From all appearances, it looked even better than the place we had, but it wasn't as we discovered after moving it. What made thing impossible to live there, besides all the things that were wrong with it was the landlord (a JW elder). He would be constantly popping in, with no notification, and not bothering to knock on the door. There were a couple of times I was in the bath, and guess who would come walking in. After that, my husband and I moved to another location, in a different congeration.
The second time, the one where I did learn my lesson. My husband was involved in a car accident, no one was hurt, but our car needed some major repairs. A fellow JW told us that his friend, also another JW in a different congeration owns a body repair shop. So we went to this "friend", and he said he would do the repairs. At the time we had a $500 deductible and worked out an arrangement for the payment of the deductible. We told him we could pay $75 a week, except for one week, the week we had to pay our rent. But we would pay double the following week, and he agreed to this.
But when the week we were to skip, and something he agreed to, he started calling and harassing us, and even threatened to report us to the elders. We headed him off and talked to our elders about the situation, told them of the agreement, in case he called, which he did report us. The harassment got so bad that we borrowed an answering machine, turned off the ringer, and screened all of our calls. This guy was calling and threatening us quite a few times during the day and night. But being a "good" JW we didn't report his sorry @$$ to the authorities.