Osterman installed a new propane tank with a faulty sensor in June 2020. Discovered by a delivery person and confirmed by a technician in August 2020 after propane tank overfilled. Short term resolution was to install a temporary external 100 gallon tank to allow propane to burn down. To change the tank, we need to burn propane down to zero so sensor inside tank can be changed. Since that time we have not been able to talk to the supervisor of the Plainfield office or main office in NY to agree on a time to let the propane burn down. Per the service technician during the August visit, The job was supposed to be done late fall before winter. Despite numerous phone calls in the fall, ww have yet to talk to the supervisor of the Plainfield office. The customer service reps repeatedly assure us that someone will call us back. The deliveries continued to the external and main tank. Osterman left us with the external tank through March 2021 and no plan to correct the problem. See photos from the front of our home. they only removed the external tank after receiving a letter from us in February outlining the numerous times we have tried to talk to them and advising we were considering legal action. It is now April 15 almost a full year year with a nonfunctional tank sensor( which they tried to deny initially until we told them we had photos) and 9 months into our inquiries for a plan to resolve the problem. Because we need to burn the propane to zero and will need to be assured in writing that when this happens they will fix the problem, we want to talk with a supervisor about a plan. We would like to stop deliveries, run the propane to zero, get an time estimate of about how long that will take and a guarantee that they will fix the sensor immediately so we are not left without propane. Osterman Hans down the worst customer service we have ever encountered- and we are not young. If there was such a thing for companies - dereliction of duty and total did respect for their customers well-being would sum it up. Please help. We are at wits end.