diff --git a/src/main/java/com/plivo/api/exceptions/TooManyRequestsException.java b/src/main/java/com/plivo/api/exceptions/TooManyRequestsException.java
new file mode 100644
index 000000000..e4e9b4fe9
--- /dev/null
+++ b/src/main/java/com/plivo/api/exceptions/TooManyRequestsException.java
@@ -0,0 +1,7 @@
+package com.plivo.api.exceptions;
+
+public class TooManyRequestsException extends PlivoRestException {
+  public TooManyRequestsException(String message) {
+    super(message);
+  }
+}
diff --git a/src/main/java/com/plivo/api/models/base/BaseRequest.java b/src/main/java/com/plivo/api/models/base/BaseRequest.java
index c6c2b4ef3..92e99b371 100644
--- a/src/main/java/com/plivo/api/models/base/BaseRequest.java
+++ b/src/main/java/com/plivo/api/models/base/BaseRequest.java
@@ -11,6 +11,7 @@
 import com.plivo.api.exceptions.PlivoRestException;
 import com.plivo.api.exceptions.ResourceNotFoundException;
 import com.plivo.api.exceptions.ServerException;
+import com.plivo.api.exceptions.TooManyRequestsException;
 import java.io.IOException;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
@@ -88,6 +89,8 @@ protected void handleResponse(Response response) throws PlivoRestException, IOEx
         throw new ResourceNotFoundException(response.errorBody().string());
       case 405:
         throw new InvalidRequestException(response.errorBody().string());
+      case 429:
+        throw new TooManyRequestsException(response.errorBody().string());
       case 500:
         throw new ServerException(response.errorBody().string());
     }
diff --git a/src/main/java/com/plivo/api/models/number/NumberCreator.java b/src/main/java/com/plivo/api/models/number/NumberCreator.java
index 2786fd654..8b825d8be 100644
--- a/src/main/java/com/plivo/api/models/number/NumberCreator.java
+++ b/src/main/java/com/plivo/api/models/number/NumberCreator.java
@@ -10,7 +10,7 @@
 
 public class NumberCreator extends Creator<NumberCreateResponse> {
 
-  private List<String> numbers = new ArrayList<>();
+  private String numbers;
   private String carrier;
   private String region;
   private NumberType numberType;
@@ -22,12 +22,12 @@ public class NumberCreator extends Creator<NumberCreateResponse> {
       throw new IllegalStateException("carrier, numbers and region are required");
     }
 
-    this.numbers = numbers;
+    this.numbers = String.join(",", numbers);
     this.carrier = carrier;
     this.region = region;
   }
 
-  public List<String> numbers() {
+  public String numbers() {
     return this.numbers;
   }