Getting ready to hire a lawyer

I've been trying to get through to the billing department for weeks, after transferring my services went wrong and my app failed to show me billing info. I was overcharged, my service was cut off, and now Xfinity is continuing to bill me monthly for services they already shut off. I have made several attempts to get in touch with the billing department, and have been lied to, harassed, and fraudulently billed. I have been told 4 times that I would receive a call back from billing, and was never contacted, yet their collections team harasses me daily. I will be consulting a lawyer this week if someone does not reach out within the next business day. The fact that there's already a tag called #customerservice #terrible #annoyed sums up how incompetent Xfinity representatives are.