Unclear bill

I hired a company to clean my roof. I opted to clean the roof and additionally clean out the valleys (tile roof). When I read the estimate, I read it as cleaning the roof and additionally the valleys would be $1499. When I received the bill, they charged me $1189 (roof cleaning) plus $1499 (valley cleaning) - $2300.

Who is in the wrong here, did I read this estimate wrong or did the contractor write it badly? (Copied text below)

Location: Washington

Estimate includes the following: Air Clean Roof-Home Only • Clean debris out of gutters or if covers blow off tops $ Included Clean Excess debris off roof top $ Included Clean up, Remove & dispose of roof debris $ Included Sub-Total $ 1,189.00

SUB-TOTAL $ see above TAX $ plus tax

Note: Estimate above does not include opening up any valleys, backs or sides around skylights, or chimneys on roof. Let us know if you have any leak issues or if you would like an estimate to open up valleys, inspect metal below tiles, adjust the lip, & clean out any debris or mud damns that may be built up or have formed below tiles hidden in the channels. Sub-Total $1,499.00 plus tax