we purchased this dishwasher november 2019. from the beginning we noticed we would have to wash our dishes 2-3 times. we thought it was the detergent, so we tried multiple soaps and spot free finish gels and still have had issues. dishes are just not clean and everyhthing seems to have a greasy film on it after the wash is complete.  why have a dishwasher if i have to wash my dishes before washing my dishes?