False advertising

On 03.10.17 I ordered an '8000 MAH ULTRA SLIM POWER BANK, ' as advertised in their daily email which was delivered on 06.10.2017. Instead of a slimline power bank, I received a 'short chunky' power bank. I went onto their website to log a return, but could not find a link to do so. I then emailed them on numerous occasions (06.10.17; 10.10.17; 11.10.17; 12.10.17; 13.10.17; 16.10.17 & 18.10.17) requesting the process for logging a return. I have to date still not received a response.