1. Section 87(b)(ii) pertains to Finance Act, 1994 and not to Central Excise. Under Section 87 the due amount of Service Tax can be recovered without issue of show cause notice, if the assessee has himself declared the said amount due in ST-3 return but could not deposit by any reason, whatsoever may be.
Secondly, suppose A is defaulter and B owes money to A. Govt. can recover the Govt. dues pending against A from B after issuing notice. B will be bound to comply with the notice. This 'B' may be bank, post office, insurance co. or any other person. As per sub-section (b)(ii) of Section 87, every person to whom such notice is served includes post office, bank or insurance etc and shall be bound to comply with such notice notwithstanding their own rules, regulations, practice and procedures. In other words, rules, regulations, procedures, practices of bank, post office, insurance etc. cannot be a hurdle in recovering the Govt. dues from these departments.For the purpose of recovery of Govt. dues, the above departments' rules, regulations, norms, practices, procedures will be relegated to the background. In a nutshell, the Service Tax department will be at liberty to recover the arrears of Govt. dues pending against A from these departments who owe money to A person.