Welcome to the forums!
Can you please open a ticket here https://support.comodo.com/ with your question.
There staff should be available to answer you, the forums is run by Volunteers, and not everybody is an expert in all products.
So you risk the chance of waiting to long for an answer.
Are your sure the compliance certificate is by company? If so, how is compliance reported to the processor, and why am I asked for my merchant ID?
I understand that you dont support multiple companies under one account - what I’m asking is if you support multiple MID’s (assigned to a single company) under one account?
We follow the PCI DSS ASV Program Guide Reference (which is available from the PCI SSC website). It specifies the format for the reports we provide. These do not include a merchant ID and refer to the customer by company name.
We do not support multiple Merchant ID’s per account.