Got this cutomer who wants me to..

[Outdoor_Maintenance_2010]

this weekly customer calls me saying her grass grows to long
and wants me to cut it shorter im like ok no problem
i cut it shorter,this week she calls me up saying well you left bunch of dead grass spots im like well you wanted me to cut it short so thats what it does
she says well teh grass is growing to fast again can you lower it aggain im like ok cut the grass again brought down the mowers..the mower where almost stalling thats how low i was getting anyway,she calls me back saying theres even more clippings on her grass...lol

what should i do now??

Im not raking her clippings shes the one that wanted me to go lower

i do not bag any of my contracts