Missing series andblank DVDs

Series - Murder She Wrote - Angela Lansbury

I bought the series and had the following issues. I have emailed them 5 times without any response.

Disc 1 Started with - It's A Dog's Life and went through to Death Takes a Curtain Call - the first four episodes are not included on any of the discs - in fact it should not be Disc 1.

Missing episodes are:-
The Murder of Sherlock Holmes
Deadly Lady
Birds of a Feather
Hooray For Homicide

Disc 17 - Very poor quality - has green squares flickering throughout menu and show - it is NOT viewable

Disc 22 - This is totally blank

Disc 28- Very poor quality - has green squares flickering throughout menu and show - it is NOT viewable

Disc 32 - Cannot select chapters

Disc 38 - Comes up as BAD DISC

Disc 42 - Comes up as Disc 8 and has the contents of Disc 8

Disc 46 - Southwest BY Southwest - very poor quality - NOT viewable

Disc 47- Is not from Murder She Wrote but in fact is "Murder She Purred" - A Mrs Murphy Mystery.