Lancet please stop harrassing me for an account I have paid within one day after notification

After paying their account within one day after I have received a sms notification for payment, I am now bombarded with sms's asking me to pay. I phoned Lancet requesting an account and I have emailed them proof of payment. Lancet you need to oay serious attention to how you treat your customers. You do not even derserve the one star I was forced to give you.