Poor customer service

Talk about failed customer service,been given the runarounds for a whole week now, worse part of it all they have already deducted their re-installation money on the 27th of December we nearing the end of January but I still have not received the service that I paid for, they get their monthly instalment every month without a fail but what am I really paying for, called their customer service number every single day this whole week and they give me empty promises even sent a message on their WhatsApp, they really do not value their customers