For the past 4 months I have been up to date with my monthly payments but I've been getting a decline in my credit score and shows that I missed payments,I tried on several occasions to communicate with them via emails but no response,I'm really disappoin

For the past 4 months I have been up to date with my monthly payments but I've been getting a decline in my credit score and shows that I missed payments,I tried on several occasions to communicate with them via emails but no response,I'm really disappointed and more furious of the declining credit score monthly.