Disappointing Take-a-lot.com

It is winter, last year I purchased a Russel Russell Hobbs - Fitted Fleecy Electric Blanket which is still under warranty. This blanket decided to stop working at the beginning of June after being used for a week this winter. I contacted the returns department, who promptly collected it. The promise by Take-a-lot is that after 21 days they will either offer a refund or replacement. it has now been 26 days, the weather is cold and I do not have my electric blanket, and now it seems that Take-a-lot cannot even seem to keep their promise. I purchase a lot of items through take-a-lot and would like to continue to do so, but am going to think twice next time if this is not resolved. All I get is pathetic apologies from the Takealot.zendesk, but no assertive follow-up.