Dissatisfied

I am writing this to express my dissatisfaction with Cellc. I have been a client with cellc for over 10 years. I had renewed my last contract in 2021 which was supposed to end in September 2023. Unfortunately I reached a very tragic time as I became unemployed however I ensure my installments were paid till August. Cellc did not call to advise anything. My point is I should be arrears only for 2 months. They then went and block my line were I can't use data or make calls however I was being charged the full contract price today my arrears is 1600 yet I paid the contract already for almost 2 years. I spoke to call centre agents that told me managers with call till date nothing yet I get handed over and now I'm asking then questions that they can't give answers I feel really dissapointed