Complaint unattended

I laid a complaint on Facebook just to summaries a lady from Unilever called me regarding a handy any refill we bought it was so thick and hard almost as if it was not fully processed it had cloths and was just impossible to use. The lady apologised and asked that as an apology she would send a voucher this called was made on the 6th of February 2018. Till this day no sms received !! So Unilever plays with they customers and gives them empty promises I'm not sure why or maybe because I wasn't irate enough to get their attention. Guess they are busy attending to other better customers. I have pictures of that product we bought I want everyone I know to see it. I must be an example to them because of this bad experience I received.