I did drywall Repair work for a homeowner : requested 3 holes patched. $175 the Estimate was sent via an invoice app. Homeowners signed it so I could do the work , I paid for the materials. I found that there was a severe mold problem in the lower sections of the sheetrock. They requested that I finish patching the holes that were in a upper area of the drywall and asked for an Estimate for mold Remediation. I finished the patch job and never received payment and homeowners refused to make payment