I have a small phone debt with Verizon, it all started when they started to bill me incorrectly and could not get the problem fixed, i went over a period of several months to have it sold but they could not fix the billing issue due to technical difficulties, now 2 years later they have it under a collections company still with a wrong amount. How can I settle this debt without hurting my credit, I know I owe something but I know they don't have the right amount, how could i solve this without hurting my credit?