unfair billing

I want you to please help me.

I have a mobile account at telkom, and since the lock down down most of my debit orders get paid via EFT. I pay my telkom account via eft on the 25 of each month. On June I paid my account twice which should be then that my account is actually in credit. Telkom is now *****ing from me as they said my account is not paid and charging me for once off charges R202.70 how can they do that. I've stopped all my debit orders from telkom because I pay eft

Will you please be able to help me

Dates paid via eft

23 May R450 24 June 200 24 july 200 25 july 200 24 august 201

My subscription is only R201, now they want to debit my account for R581.40 end September for money to pay towards account, but I did pay my account. There should be no arrears. I've tried to call them numerous times but they don't understand.

I'm paying my vodacom also like this for the past 6 months with no problems. How can telkom do this.

Please help me. If I did not pay my account it will be a different story but I actually did pay in advance.

Regards M Beyers