Do you have any more suggestions how we can promote our service? We'll be glad to hear your ideas!
I think you should add affiliate campaign on your website.
There are many customers and aggregator services that could use your service to earn small percentage from each completed trade.
You can also advertise in different ways in bitcointalk and in altcoinstalks forums.
PS
I would never click on any ads in telegram, knowing it is full of scam and scammers trying to trick people.