What are the laws associated with the below senario and what case studies can I use for examples?

Senario

Jeremy wanted to make some changes to his home. He visited One Stop Shop and ordered the following items:

An air-conditioner unit for $2000. He pays another $500 for the installation.

A Smart TV worth $3000. The salesman told him that Samsunk was the best Australian brand to buy and had great reviews.

A microwave oven for $400.

When the items were delivered to his home, he was given a document. The document had the following clause:

"No warranties or guarantees are made in relation to the efficiency of the operation and suitability for purpose of the items sold."

The air-conditioner was installed badly and there was a lot of water leakage when it was in operation. The Smart TV had very basic features and did not function like a Smart TV. It was later found that the TV set was not even an Australian brand and had very bad reviews. The microwave oven blew up after being used 5 times and it caused a small fire in Jeremy's kitchen. This resulted in $3500 worth of damage. Boom Co manufactured the microwave oven.

Jeremy calls One Stop Shop to complain but is told that no action can be taken against them because of the clause. Advise Jeremy if he can pursue remedies against One Stop Shop and Boom Co.