Tesco refund policy

Hi,

I bought an electronic toothbrush from Tesco yesterday and I went to customer service to get a refund on it as I changed my mind.

They said no you can't get a refund we can only exchange it as terms and conditions for refunds changed in November 2019.

I was shocked that I couldn't get a refund. It was £50 electronic toothbrush.

I even asked to change it for a cheaper toothbrush that was half price and they said no it has to be £50 or more to be exchanged.

Are they making this up?
Would I be able to get a refund still?


Thanks