Hello, got home after a long day, ready to have a shower and notice a giant mark on the gas boiler in the bathroom...it looks like the fire in the boiler has somehow managed to burn through the wall! I’ve told all family members to stop showering or use the hot water tape. How do we fix this? I guess it would definitely need a replacement. Who would be most suited for the job? A plumber or someone else..? Slightly worried..please see attached image.