Am I eligible to pursue Post Graduate Diploma in banking and finance (PGDBF) at Symbiosis Centre for Distance Learning, Surat?

Yes, as you have completed Bachelor's degree, you can opt for the course.

The minimum eligibility to apply for programs at SCDL is bachelor's degree successfully completed from UGC recognized university. If you have this bachelor's degree successfully completed from UGC recognized university, you can proceed to apply at SCDL for programs offered by them.