Telkom doesn't allocate payments and still want to charge non payment

Telkom call centre agents are rude . They dropped my call twice in 1 night . From different agents . I was billed twice in December 2024 . When I reversed the second 1 which was R610 . They blocked my SIM cards until February 2025 . They refuse to allocate the first payment which was R510 . Now saying I never paid in December 2024 . Even when I did infant get hold of them via email providing proof of payment . Even when my bank doesn't give proof of payment for debit orders . I've paid in January 2025 R510 which up to date still not allocated to my account . I feel like a loser . And every time I enquire they drop the calls in my ear . Very bad service from this Telkom provider .