Currently waiting for a refund, they have acknowle...

Currently waiting for a refund, they have acknowledged that they have received the phone back and that I'm due a refund in my bank account by 17th Dec 2018 - I will update this feedback advising whether or not I received the refund.
Outline of issue:
- Ordered Goods 11th Nov 2018
- Received goods on 13th Nov 2018 there was a defect, I contacted the company via email as I could not get through via chat or phone
- Received email from company asking to return goods
- 15th Nov 2018 returned goods to QMF
- QMF receive returned goods on 17th Nov
- since that date numerous emails sent and managed to get through to online chat once!
- Eventually on 28th Nov they agreed to refund - take 10-14 working days. My gut feel is that they either wont refund by 17th (they will add another delaying tactic) or they will leave it to the last day to pay.
Overall feedback.
I'm very disappointed with the overall service due to the following reasons:
1) I did not receive goods fit for purpose (Goods received were in an unsatisfactory condition)
2) Poor customer service
3) Not answering phones
4) Chat off line more than it is on line, and when you get through the person at the other end responds to you before you press return - which indicates they can see what people are writing live - but we cannot see what they are writing until you press return - that's unacceptable and smacks of underhandedness, as a result the chat was disjointed until I pointed this out to the agent, then and only then did they do me the courtesy of allowing me to finish before they responded - rude behaviour not impress at all.
5) Not responding to specific questions - standard responses sent until I said that I will start legal proceeding unless I receive a refund - leading to the next point
6) Delaying tactics: standard responses sent, not answering specific questions, leading to the next point!
7) Lengthy Refund process in this day & age of technical advancement it should not take them 10-14 working days to process refunds, it should only take a few days to refund, other companies that are not clued up to technology manage to refund within 5 - 10 working days. Considering they are using a secured provider to process payments they should also have refund mechanism in place too.
13th Dec 2018: In response to Quick Mobile Fix response - in previous emails you have already said you will review the order (numerous times), no need to review, you have agreed to refund, so I would prefer you just get on and refund me my money, its a lot of money that can ill afford to lose - so I will pursue the matter until I have it back, so just stop dilly dallying around and refund me my money!
14/12/2018 approx. 16:40: Still no sign of a refund they have until Monday 17th Dec to give me my money back, if I don't have the funds in my account by 12 noon on Monday, I will be contacting my bank, trading standards, and start legal proceedings I have been looking into CCJ and its look quite straightforward. Also it appears that there is an option to raise 'an order to obtain information' and if they disobey the court order it can carry a prison sentence - quite interesting. The Citizens advice web site is very helpful.
17/12/2018 16:31; No refund given, I have contacted citizens advice and raised a complaint, they will contact trading standards on my behalf.
I was advised to wait until tomorrow morning, before I take further action, because QMF will be in breach of contract if they fail to refund me by midnight 17th Dec (due to the fact i have an email from them on Nov 28th that states they will give me a refund), after that they are in breach of contract (i.e. they failed to refund me within the time period) and if they don't resolve in a reasonable time then it can be considered a criminal offence. Please if you are having problems with refunds or not receiving goods from this company - contact trading standards even if you get your money back via credit card, bank or pay-pal etc. the more people that genuinely complain they will more than likely investigate QMF