FNB IS SOOO USELESS

FNB i filled in a dispute form last week Tuesday 28th of November and I explained to them very well that the payment made was an online transaction to a company I suspect it's a **** there is no number to contact them on their website and there is no direct email now I don't know what to do, I told them the whole story and they said if I fill in a dispute form it should all work out fine but today is the 7th day they are telling me that I need to contact the merchant wooooooh such dumies!!! I told them these people are **** now where am I suppose to get the merchant it's sad that my bank can't help me get my money back FNB and their stinking service soh stupid people !!!!!!!! I'm ****ed and moving to another bank in Peace