Pathetic service with MTN

On the 25th debit order did not go.off i.paid R6160 then on the 26 thwy went and deducted 6170 12 days later still.figting for my refund the this morningnj grt a refund for R2336 i nees the fuĺ refund back and not.oartial my car did not go off and is in aarears