If the marketing service asked about is based on the customer or purchaser subscribing to something, meaning that he pays a sum of money in return for getting some discount or reduction in prices of goods or services that the seller is offering, then this is a haram transaction. If the transaction is haram, then it is also haram for you to tell people about it or to help people deal with it. For more information, please see the long answer.

It is not permissible to seek the help of an unveiled, adorned woman for the purpose of marketing and advertising, because that comes under the heading of helping in spreading tabarruj (wanton display) and causing people to look at haraam things.