Telkom horrible SH...company

Telkom has to be the worst service provider. My contract ended in August,I then received a statement with a credit, since then no one has contacted me,when I called to enquire on when ill be credited I've been sent from pillar to post its been 2months no one has called instead if you don't follow up they will keep that money,I wonder how many people need to be credited by they aren't because no one will call you about the credit,**** company.