Worst support I have ever received from a service provider

I have signed up for a fibre line on the 3rd of August. I made an immediate payment, which was supposed to ensure quick activation. I have sent all documentation immediately. Today is the 22nd of August. It is impossible to speak to an agent as option 2 (which is for non-sales) drops off immediately. Only option is Whatsapp. As we speak I still don't have an active line. No feedback. No follow up. Even after three formal complaints.