Updated
A brand comparison needs a specific product
Mahadev Book and Betfair are names in this comparison, but the names alone do not establish which product, account or terms a claim describes. A service may be discussed through a website, app or account contact; those references need to identify the same subject before conclusions can be drawn.
In particular, the word 'exchange' is not proof of how a specific account processes prices or transactions. This page does not establish an advantage in odds, control over prices or expected results for either name.
A sports record is different from a payment record
A match result, an entry shown inside an account and a transfer recorded by a payment provider concern different events. One cannot substitute for the others when explaining an existing dispute.
The sports account overview supplies terminology, while the payment record guide explains transaction references. Neither guide verifies the current functions or processing times of a Betfair product.
Support conclusions need comparable observations
A chat acknowledgement for one service and final resolution for another would not measure the same support outcome. Keep the initial question, reference, response and unresolved status together.
Mahadevbook7.com's enquiry route concerns this site's published contact, not verified Betfair support. Keep passwords and one-time codes private. The information here does not establish a tested winner or an authorised relationship between the services.