BAD CUSTOMER SERVICE

I renewed my contract on the 04.09.2018. The deal included 30g of data, once off for 30 days. This data was not loaded onto my sim. I contacted the MTN store where I upgraded my contract and I was told it takes 24-48 hours. 72 hours later still no data. Went back to the store only to be told I should call 135. I called 135 logged a call and received a reference number. I was told it would load within 24 hours. 72 hours later still no data. Went back to the store again and I was told they logged another call. 48 hours later still no data. I called 135 only to be told the call has been escalated and I should go back to the store. REF: 1- ********** 3426