One of the worst ideas we've ever had

There were a couple of lights out in our house and they are too tall for us to change. To change them you have to have a pretty high ladder. Our landlord (who lives one floor below us) had taken care of one light like this before without too much difficulty. So, we decided to ask him to fix a couple more. That has proven to be one of the worst ideas we ever had. We have survived without those lights just fine, but figured it would be nice if they worked. We thought it would simply mean he brings his ladder and changes out the bulbs. Unfortunately, that has not been the case. We think the reason the light wasn't working before was because there wasn't enough power going to it. He sort of fixed that by re-routing power from somewhere else. Unfortunately the result was that if we took a shower, the combination of the water heater plus bathroom light flipped the breaker for the bathroom and you were suddenly showering in the dark in cold water. This was never a problem before. Also, a new development in the problem is that the kitchen socket can no longer provide enough energy to run the fridge plus any other appliance at the same time. We have burnt out 2 power strips to discover this. The kitchen was never a problem before. We told him that there was a new problem and he sort of came to fix it some more. Now the outlet for our water cooler no longer works. This was never a problem before. Overall, asking him to fix our lights is one of the worst ideas we have ever had as it has resulted in problems that never existed before. Here is a picture of the new fuse box. I was going to post more pictures, but they won't post for some reason.