Billing dispute

This organization does not believe in customer service or contractual agreements. Signed up for a Price Lock Package and the billing does not tie to the contracted for R899 per month. The "corrections" that have been made too don't tie to the contract and price agreed to. After 3 calls, 2 emails and now a 45 minute hold trying to speak to a manager or supervisor I am no closer to get resolution to this billing problem. On hold someone quickly picks up and then immediately places one on hold again so that you cant speak.