FNB Connect ******* on DATA

FNB Connect is the WORST place to contact for assistance. On 20 August late afternoon I purchased 2 GIG data(phone was off the whole day), yesterday a day later it says the data is finished... without me even browsing... I bought another 1 gig last night - switched the phone off.. this morning put the phone on and 40mb left????? THis is a *******! I called the call centre and Lindiwe Gauala was of no help at all advising me to switch off my data if I am not using the phone... Helllllo?????? the phone was off and I have never had this problem why now... I want my data refunded asap