STOP YOUR NUNSENCE ON SENDING ME SMS

I did pay these people there money in their FNB account last year on the 5.10 2015 the amount of R280.00 wich was suppose to be only R270.70 and they never stop sending me sms's to inform me that i am now handed to there legal apartment.After a month of silence i did get another sms today saying the following in capital letters :<br> <br> YOU HAVE NOT RESPONDED TO PRIOR MSGS ON YOUR NHLS ACC.PAYMENT IS REQUESTED WITHIN 48 HOURS. REF *** CALL MBDCS ON ***.<br> <br> Now i do have a problem with these people as my emails that i did sent them a several times is been costing me now more as the money they look for and already been paid to them.<br> What in the world is going on with these people...They are going to far now...Thank you<br> <br> PS How can they sent me to there legal department when payment to them is long time been done...please help