Unable to receive phone signal indoors
I have been with Smarty since I was forced to change my supplier when Plusnet stopped providing moble access. I had no issues at all with the phone signal when I was with them. I recently became aware that I was losing my phone signal indoors when I didn't receive 2 very important calls. The person ringing had sent texts previously and usually they arrived in a timely fashion, although one did take 12 hours to appear. I then noticed that the phone icon at the top of my screen kept disappearing, sometime for hours at a time. I did a check on the Smarty site and have been assured that I have "excellent 4G coverage both indoors and our". I would like to ring Smarty but can't find any numbers or even an email address, can anyone help, please?. Thank you