For complaints or other feedback related to a product bought in stores or an experience with in-store service, you may write Asda at this address:
Great Wilson Street,
If you cannot get the answer you are wanting from their FAQ's call their Customer Service Team on 0800 952 0101 for assistance. Lines are open from 8am to 8pm Monday to Friday, 9am to 5.30pm on Saturday and 10am to 4pm on Sunday.
Other useful contact details:
Asda Switchboard: 0113 243 5435
Asda Money: 08717 043362
For Asda Direct, you can access them online, just submit your question then the support team will call you about the query.
Price check your shopping with ASDA and the ASDA price guarantee will give you a refund if ASDA is more expensive based on mySupermarket's price check.