incompitent staff

Got a call to review my contract around October/November 2017. I was expecting written notification with terms and condition but haven't received anything to date. To my surprise the contract kicked in on 1 February 2018 after having bought 10 gigs of data the day before and it was all taken away. Called on 1 February at 18:55 asked to be returned to my old contract and I'm willing to pay for both, the lady I spoke to said my old will be returned back within 48 hours. Called back on 3 February, to be told that its not possible and the lady i had spoken to had in fact signed me up to a 5 gig contract . Called back on Monday 5 February at 12:03 spoke to Thabiso to escalate the matter to be told that they will get back to me in 7 day, till today 15 February no one has responded back to me. I'm unable to recharge my airtime and therefore cannot make any calls and its frustrating to get such ********** service from *********** individuals