Complex sentence: But the problem is that these houses have been arranged in a very erratic way.If you plan of receiving a letter through normal posts, you won't receive it at all until you give your own efforts to claim it from the nearest post office-Nabnagar.
Split into simpler sentences: But the problem is that these houses have been arranged in a very erratic way. So, If you plan of receiving a letter through normal posts, you won't receive it at all until you give your own efforts to claim it from the nearest post office-Nabnagar.