Poor service

I received this text massage'You will receive your free 200MB data, valid for 30 days, on 05-APR-16. Browse and share on SA's best mobile network!' By 5th of March 16:00 had not received the data,I called Into the call centre and spoke to an agent who kept on repeating what I told him as if to make himself understand or the information regarding my problem to ring bells in his head,after putting me on hold for what felt like days, he came back and told me that technically it was still the 5 nd my data was on it's way,I requested to speak to a manager and was placed on hold till I decided to hang up as my battery was dying,I don't know why vodacom sends me massages and they don't iform consultants dealing with us and why I should tirelessly go out of my way to probe about something I was promised and given an allocation date for!!please enlighten ur staff and keep ur promises,this is pathetic and big inconvinience and waste of my time,sort it out please!!