bad service

I have a debit order with African bank which is on 20TH every month.

On January 2019 debit order went early on 18/01/2019 without my concerns and no one notified me.

Same day I reversed the debit order since I was expecting it on 20th as per agreement and it didn’t strike again.

In February I was debited twice( normal instalment and 808.48 don’t know what is for).

Today I have recent an sms saying I will be also be debited with 808.48, I real don’t understand why because at first it was your mistake to debit me early without my concerns and no one notified me.

I request you to sort out this issue in 24hours, if not I will take it up with my attorney.