No spam. We had a similar problem with our block wall basement where the basement produced puddles days after a heavy rain.I tested the voids in the blocks by punching a hole in one with a star drill and the water shot out three feet until the void drained down. We opted to go with the dig out around the inside perimeter and tile and pea stone it. We also drove holes into the voids in every block and alloweed the blocks to drain into the new drain tile which we connected to our existing sump hole and replaced the concrete. We just moved from the house and for the past 20 years we had not one drop of water leak in.