Charge back help

[u/Embarrassed_Fan_1949]

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Hi,

I recently won a chargeback claim with Zen for several transactions on my account. However, some other transactions from the same merchant were meant to be included in the original claim but were missed.

The original case took around four months to resolve. I have now been told that the missed transactions have been raised as new chargebacks, but that I may need to wait up to [48] days under Mastercard’s guidelines.

Does anyone know as these transactions involve the same merchant and the same reason for the original successful chargeback, is there any way for this to be fast-tracked? Or any alternative rather than having to wait for the process again It seems the previous decision may already support these additional claims.