Actually how we feel zbtt maker not think alike.
By sewagram slip service can easily be replaced by this service.
but It seems Zbtt dont cares. Due to such attitude 12151/12152 Samarsata exp is now at stake. Many passengers from populous Eastern barddhaman district depends on it and they used to board this train at Bankura jn to reach chhattisgarh and Vidarbha region. They have Mumbai bound daily train (Hwh mumbai mail via allahabad) but it does not cater to this region.