Aztil aircondtion co Fraud-Fraud-Fraud--Dont fall for the protective coil spray pitch west palm beach, Florida

 Upon recieving a  n0-charge maintenance on my year and a half  old Carrier Airconditioner . I was approached by the technician that it is advisable to spray the coils to protect them from the rust and corrosion.  I was mislead on the price but I will let that pass as I should have been more careful. Being a senior citizen and in need of glasses , I misread the quote as $8.95 of which was never verbally told to me by the tech.  Assuming it was $8.95 I gave the tech $20 and told him to keep the change.  10 minutes later he came band told me the work was done . At that point he asked me how I was going to pay Check or Charge  I told him "why should I pay I gave you $20 and told you to keep the change  " He said the charge was read wrong by me and the charge is$89 "  What else could I do I screwed, up so I paid.   After he left I went outside to check ona gutter pan and I noticed a blue film all over the covers of the airconditioner   What that tech did was spray thru the louvers of my unit. No way could the coils be sprayed correctley without opening the unit.  Coils are round and doubled layered  they just cant be covered spraying thru louvers.   Conversations with the Co ended when they offered a 6 month extension on the service contract and then reduced  it to 5 at that point we ceased conversation with AZtil   THey have no regard for their reputation just the money .  Why should a relatively new unit need spray? Why was it not offered at instalation if it is really needed????  Why sould a cup full of spray cost $89 ?? Why was it not applied correctley???  I hope other consumers reading this will avoid the same rip-off  Shame on you Aztil