Not being able to try on and also not being allowed to return

I went to Woolworths Cape Gate and to buy body shaper. As per Covid regulations I could not try on the full body long leg seamfree open gusset costing R279.00. The lady that assisted me said I must chose the size that I usually were. When I got home the garment did not even go up on the legs. Today I went to return it, then I was told about a policy. No returns. When I asked to speak to someone superior I was told to go to the website. The supervisor at customer services was so dismissive as if I am wasting their time. I feel I was not treated as I customer. Because when i went to buy this in the store , there was no one to assist with taking measurements if they know that there are no returns. And being referred to the website to complain was very inhumane. And I asked the lady she would rather have me do a hello Peter complaint she said it is my choice. I do not believe such treatment and being undermined that way.