Merchant terminal cancelled, still billed

I cancelled my merchant terminal, gave the required calendar months notice period which ended in February, I made no transactions on the machine after the 29th of February, as instructed by Merchant Services, an FNB employee collected my machine on the 1st week of March and this month I was still billed for another month.<br> <br> I'm now told that the \matter will be escalated and will take upto 14 working days\"<br> You guys need to refund this money immediately. I cannot wait 14 workings to get R900 back, I have other expenses and bills to pay right now"