MTN STOLE MY DATA

I am very disappointed and disgusted with their dishonest action by *****ing my data without notifying me. I was on a 500 package contract with them for years and last year 2019 it came to n end. Thereafter I was on a month to month. Then on the 12/12/20, when I normally get my 500 minutes, 500 sms`s & 500 data. To my surprise, I did not get my data. STILL PAYING THE SAME MOTHLY AMOUNT(Debit order). Since then I visited their branch twice, made 2-3 phone calls and they could not gave me an answer why they did not send my data. Eventually with my 3rd call yesterday, I was put through to a "higher level" who then told me that my package is outdated and they DO NOT SENT ME DATA AS FRONT THIS MONTH. BUT I MUST PAY AN ADDITIONAL AMOUNT TO PURCHASE DATA. This is THEFT. The operator did not even respond when I ask why I must pay the same amount and dnt get data. This action from MTN is dishonest and I need a credit if they adjusted their package without a justifiable reason. Then they have the audacity to send their invoice during this malpractice. Please advise!!!!