MTN RIPPING OF CUSTOMERS

On 13th Of May 2020 I took a new data contract with MTN, it was a 120G for 24 months, it 40G anytime & 80G night. On 18th of May 20 they loaded 53G with is the prorata for that month. On 17th of each month is when my account reset, on this day instead of being loaded with the full month Data I was loaded with 40G anytime & 10G night. I did called MTN 18th June But still 26th June i have not reveived any response. My reference is ***.