Very Scared customer!

I recently got calls from companies wanting to help me with me credit score. I was confused because as far as i was concerned i paid my debt on time and all times. Since Anglo has taken over my debt my scores are so low, i also cant see the debt decreasing on my banking app anymore so I'm confused whether the money i am paying Anglo is being paid to my Bank. I only have this WhatsApp number that i use to communicate when i have concerns. I do not get any reply and I'm extremely worried to the point where i want to go to the police station to report this