Bad service

I went to Mtn store at Cresta Mall on the 15th of September the Consultant Paul attended me. I requested an allocation of payment on my number as I used a wrong reference number. I was given a reference number of the query that was said to be escalated to billing to allocate the payment. To my surprise on the 30th of September my number was cut due to non payment. I called Mtn customer care line, provided them with the reference number I was given by Paul. They told they can't recognise the reference number. I had to go back to the store. Abigail who said she the store Manager assisted me. She also couldn't recognise the reference number I was given. She requested to escalate a query for the payment to be allocated with reference number 1- ********** 3531. That was on the 30th of September. After feel day's I got an sms staying that my query was resolved. However after few day's my line was cut off. I called customer care they told they escalating the query and opened my line. I got a call from Abigail from Mtn Cresta saying the payment has been allocated. Today is the 12th of November my line has been cut off again due to non payment. When I call Mtn they tell me the person who was suppose to allocate the payment did not allocate the payment. I'm really disgusted by this appalling service that I'm getting from Mtn. Can someone please resolve this query I'm tired of calling customer care.